locomotive safety valve for sale

After a boiler has been engineered, built and tested for a given operating pressure there is only one reliable way to prevent operation of the boiler above this design pressure.  This is a safety valve.  The safety valve should be sized so that a single valve can handle the maximum steam production rate of the boiler and once open prevent boiler pressure to continue to rise.  Standard operating procedure for the last century has been to install two safety valves on the boiler, one set 3-5 lbs below the design pressure and one valve set at the design pressure.

The 1st valve listed below is a true adjustable differential pop valve.  The differential is adjured through the differential rings lock screw hole, from 3 PSI to whatever the operator desires.  The pressure of the valve can be adjusted from 40 to 200 PSI.

The other valves listed are adjustable for release pressure and have a "pop" action:  The pressure differential is not adjustable on these valves.  If the valves are operated above their nominal pressure, the set-reset differential increases.  If operated at lower pressure, the differential decreases to the point of disappearing about 10-15% below nominal pressure.

Kunkle Relief Valve OverviewWhen it comes to industrial and commercial safety and relief valve products, Kunkle’s valve’s catalog is second to none in steam, air, gas, and liquid applications.

Kunkle relief valves range in size from ¼” NPT to 6” flange and are suitable in cryogenic and high temperatures up to 800°F environments at vacuum to 7,500 psig pressure. Kunkle Valve’s code certifications meet several global and national board standards, including ASME Section I, Section IV, and Section VIII, PED, CRN, TU and Chinese, as well as non-code requirements.

Relief Valves for Steam ServiceSteam supplies heat for industrial and chemical processes and also is used to heat buildings, supply mechanical energy, and drive mechanical equipment. Steam moves from the boiler to the end point, then heats by direct heating or indirect heating through a heat exchanger. Kunkle steam relief valves are critical to protecting equipment such as boilers, steam lines, and pressure valves, from being over-pressurized.

Relief Valves for Air ServiceKunkle designs valves for air service, for example for air compressors in mechanical shops and small factories where either low-pressure or high-pressure air is required. NASVI stocks Kunkle relief valves for air service in iron, steel and bronze for a variety of uses.

Relief Valves for Liquid ServiceKunkle also makes valves for liquid service, which provide bypass relief in a variety of applications and liquid types.

More About KunkleKunkle Valve is a renowned pressure relief valve manufacturer. Erastus B. Kunkle invented the safety valve to prevent overpressure in locomotive engines. Kunkle patented it in 1875. Since that time, Kunkle has earned its reputation for high-quality valves, and other equipment manufacturers ship their products with Kunkle’s valves pre-installed.

NASVI has stocked Kunkle safety relief valves since we opened in 1975, so we are confident when we call ourselves Kunkle safety valve experts. Every day we fulfill orders for our customers looking for Kunkle relief valves for steam, air, gas, and liquid applications.

Modern “code” safety relief valves are not designed to operate continuously, as required in locomotive service. Locomotive style valves are designed for locomotive service. Our Consolidated type pressure relief valves are made to the original Consolidated design, and have the same reliability and durability as the originals. Consolidated did not recertify its locomotive style safety valves in the 1950s due to the lack of demand resulting from the demise of the steam locomotive. Though our pressure relief valves are identical to the original design, they are not National Board certified safety valves, as it is not economically feasible to have National Board recertify the design due to the small quantities required by steam locomotives today. If your jurisdiction requires a “code” safety valve, a practical solution is to install a “code” valve set at MAWP, as the “high pop,” and a Strasburg Rail Road pressure relief valve, set at 5 PSI below MAWP, as the “low pop.” This avoids lifting and wearing out the “code” safety valve.

One of the charms of steam locomotives is their individuality, but the downside of that lack of standardization is the tremendous number and variety of spare parts. The Strasburg Rail Road helps to solve that problem with our selection of flexible staybolt caps and sleeves. All are made of material certified to ASME specifications, and to the same dimensions as the old “standard” sizes. By consulting the thumbnail drawings below, it should be easy to match what we offer to your needs.

Boiler work on steam locomotives often means replacing staybolts. The Strasburg Rail Road stocks mill runs of certified, easy to drive SA-675 Grade 50 staybolt stock that we offer for sale as plain bar stock, or made to order in the form of rough or finished rigid, flexible or crown staybolts. We forge oversized heads on flexible and crown bolts, and our CNC lathes make getting your order ofcustom made bolts an easy and economical process. Thread, head and relief size and profile, bolt length and depth of telltale hole can all be customized to your specification.

Erastus Boise Kunkle, born on December 14th, 1836, learned the machine trade from his dad. Kunkle labored in a high pressure job before inventing the relief valve.

He worked in the locomotive shops for Pennsylvania Railroad where he invented a lock-up pop safety valve, designed to release steam pressure in locomotive engines. Boiler over pressure was a serious problem, yet relief valves were unheard of at the time.

The Fort Wayne Safety Valve Works, operated by E.B. Kunkle & Company grew and a 100 years later a modified version of the original invention was still in production and the eggbeater was a standard kitchen tool .

In 1947 Kunkle Valve acquired the valve division of the Star Brass Manufacturing . The navy used Kunkle relief valves on ships and later on nuclear submarines.Valve shipments were over 1,000 a day in the 1970s.

In 1991, Kunkle Industries became a division of Anderson, Greenwood & Company. Anderson Greenwood (AGCO) is a current leader in pressure management valve solutions and has a unique back story all it’s own in aviation design.

Contact Flotech for all your valve requirements including pressure safety valves , control valves, manual valves or anything that requires an expert and/or fast turn around.  Contact us for Crosby Valves, Kunkle Valves, Consolidated Relief Valve Repairs, Varecand many other Valves.

Steam locomotives use boilers to generate steam. To prevent the boiler to be overpressurised a device called a safety valve is used. This releases a small amount of pressure before resealing.

Once it is printed check all of the surfaces mate correctly you should be able to blow the bottom casing and hold the valve down with little gas leakage. the same with the top casing and valve. Once put together if you blow the bottom casing the top should nudge up if you reduce the pressure the top should still hold. This is until a low enough pressure that the spring is able to close both valves with a satisfying "pop" (Hence the name).

This safety valve works by the pressure from the boiler acting on the area of the bottom valve when the blowing off pressure is reached the top lifts. the steam is now acting upon both the top and bottom valve surfaces so a significantly lower pressure must be reached before the valves shut.

A reconditioned Ramsbottom type safety valve, cast iron body with 6 stud flange. Suitable for large boilers including stationary and marine types. £ P.O.A.

A reconditioned Ramsbottom type safety valve, cast iron body with 4 stud flange. Suitable for large boilers including stationary and marine types. £ P.O.A.

RF2C9C8DA–A pop valve or relief valve, is a type of safety valve used to control or limit the pressure in a system or relief pressure, vintage line drawing or e

RM2AXFR4G–Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . combined,possesses outside means for adjusting or regulating itunder changes of pressure, without disturbing its connections or parts. American Improved Locomo-tive Muffled Pop Safety Valve.This valve has many newfeatures, one of which is themanner in which it is adjusted;both the blowing-off pressureand the blow-down are adjust-ed from the top of the valvewithout removing the mufflercasing—simply remove thesmall top cap. The blowing-o

RM2ABX499–AN IMPROVED SEWER VENTILATOR. WORTHINGTON"S SEWER VENTILATOR. THE AMERICAN PATENT POP SAFETY VALVE. A Horse Killed by Electricity. AN INDICATOR ATTACHMENT FOR PASSENGER ELEVATORS. HAYWARD"S INDICATOR FOR PASSENGER ELEVATORS. American Railways in Chili. THE AMERICAN PATENT POP SAFETY VALVE., scientific american, 1889-02-09

RM2AWHP2K–Locomotive appliances . Fig. 15. Ashton Open Pop Safety Valve. Fig. 16. Ashton Muffler. LOCOMOTIVE INJECTORS. This chapter, while devoted to locomotive injectors,does not pretend to treat of them in their entirety; itdoes, however, contain brief descriptions and practicalinformation on various types in common use onlocomotives. The injector was patented in 1858 by Giffard, aneminent French engineer, and was introduced intothis country in 1860. There is a great diversity of opinion as to the theoryof how an injector works, yet that generally acceptedis that an injector works because the great v

RM2ABX6HA–Barnes" Foot-Power Machinery et NEW VICTOR ARTESIAN TO BUSINESS MEN Presses Corn Shelters Pile Drivers Well Diggers Stc. CINCINNATI. OHIO. POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE STEAM ENGINE INDIOATOR used In connection with Steam Air and Water. CHALMERS SPENCE CO. DE, scientific american, 1890-10-18

RM2AXFT4H–Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . external view sectional view with lever Figure 187 Crosby Muffled Locomotive Pop Safety Valve chips, or any hard substance be left in the pipes orcouplings when connecting the valve with the boiler.Never make a direct connection by screwing a taperthread into the valve, but make the joint with thevalve by the shoulder. Repairing. This valve, having flat seats on the sameplane, is very easily made tight if it leaks, by follow* 39§ LOCOM

RM2ABX6W7–Highland Ave. SIDNEY OHIO. A LATHE ROCK DRILLS AIR COMPRESSORS MINING AND QUARRYING MACHINERY Ingersoll - Sergeant Rock Drill Co. POP SAFETY VALVE UIIMPROVED STEAM GAGE STEAM ENGINE INDICATOR Popular Books FANS. GEO. P. CLARK Manuf. Box L. Windsor Locks Ct. 361 Broadway New York., scientific american, 1891-01-24

RM2AXFRYR–Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . external view sectional view with lever Figure 187 Crosby Muffled Locomotive Pop Safety Valve chips, or any hard substance be left in the pipes orcouplings when connecting the valve with the boiler.Never make a direct connection by screwing a taperthread into the valve, but make the joint with thevalve by the shoulder. Repairing. This valve, having flat seats on the sameplane, is very easily made tight if it leaks, by follow* 39§ LOCOM

RM2ABWR4E–E. GOULD & EBERHARDT NEWARK N. J. PATENT QUICK SHAPERS Adjustable Stroke CUTLER"S POCKET INHALER INHALANT. Over 300000 in use. RUPTURE Charcoal Blast Furnaces. WILBRAHAM BROS SPEAKING TELEPHONES. AMERICAN BELL TELEPHONE COMPANY 95 Milk Street Boston Mass. THE SCOVILL "Pop" Safety Valve SIMPLE. RELIABLE DURABLE THE HANCOCK INSPIRATOR CO. BOSTON MASS. HOPE:EDEAF PERFECTLY RESTORE THE HEARING More than One Million Copies Sold I EVERYBODY WANTS" IT. EVERYBODY NEEDS IT. 258th Edition. (New.) Revised and Enlarged. on Manhood; the Cause and Cure of Exhausted Vitality Nervous and Physical Debility

RM2AWJ0JT–Locomotive appliances . Fig. 4. Fig. 5. Exterior View. Sectional View. The Star Improved Locomotive Muffled Pop Safety Valve. the discharge when the valve pops will be greater orless correspondingly. MEADY MUFFLED LOCOMOTIVE POP SAFETYVALVE. The cut, Fig. 6, represents the Meady muffled loco-motive pop safety valve, showing its internal con-struction. It will be observed that the valve properprojects upward through the perforated casing ofthe valve, enclosing within it the spring which holdsit to its seat; and the upper or outward side of thevalve is open to the air at all times, so that when

RM2ABWR8E–Pop" Safety Valve SIMPLE. DURABLE. THE HANCOCK INSPIRATOR CO. PULLEY IN THE THE CHEAPE AposET ON 30 DAYS" TRIAL! ACHINERY ICE MAKING MACHINES COLD AIR MACHINES age Warehouses Hospitals etc. — MACHINISTS" TOOLS. Hard Rubber. IRON REVOLVERS PERFECTLY BALANCEb P. H. & F. M.ROOTS Manufacturers SPEAKING TELEPHONES. UPTURE Horizontal Steam Engines ARTISTIC HOMES. DUVAL"S PATENT DERRICK. 150 Roars RON BLOWER USEFUL BOOKS ELECTRIC hi GHTS„.{. DO YOUR OWN PRINTINU " .-:LI ! WIRE ROPE BRIDGE CABLES SHIP RIGGING "BLAKE"S CHALLENCE " ROCK BREAKER. "Steam Fitters" & Numbers" &Mies FORSTER"S CRUSHER AND

RM2AWJ0Y1–Locomotive appliances . Fig. 2. Fig. 3. Exterior View. Sectional View. The Star Improved Open or Plain Locomotive Pop Safety Valve. Figs. 4 and 5 illustrate the muffled Star pop safetyvalve, which is seen to be similar in construction,with the addition of the top hood, or muffler, whichtends to greatly reduce the noise of the escapingsteam, and hence is of considerable advantage. Boththe plain and the muffled valves have Large reliefpowers, and are made to withstand the highesl pres-sures used on locomotives. The slotted domes amimufflers have their real aim in preventing din amicinders from e

RM2ABX660–USE ADAMANT WALL PLASTER 4ealers. SEBASTIAN MAY8b CO"S 165 W. 2d St. Cincinnati O. EDISON LAMPS We will send free Catalogue E How to Make a Cheap Battery EDISON LAMP CO. HARRISON N. J. dealers. POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE STEAM ENGINE INDICATOR Single Bell Chime Whistle and all instruments Starrett"s Patent Combination Square Prices from II1.25 IDEAL MUSICAL BOX Is the Latest Invention in Swiss Musical Doges NEW CATALOCUC Useful Beautiful and Cheap. MUNN & CO. Publishers 361 Broadway New York. It is Hard Dense and Ad Syracuse N. Y. Patent Foot Power Machiner

RM2AWJ1F8–Locomotive appliances . equate warning before blowing hard,thus enabling the fireman tocontrol his fire or regulate thesupply of feed water beforestrong popping occurs. Usedon high pressure boilers, it opensand closes gradually, thus pre-venting excessive strains uponthe boiler. By means of the spring boltand adjustable ring both thepoints of opening and closingmay be changed without remov-ing the valve or reducing thefig.i. steam in the boiler. The eon- The Coale Pop Safety Valve ,. ,. ,, «, i and Muffler. struction of the muffler reduces the noise of the escaping steam to a minimum. Thisfeat

RM2ABX61J–POP SAFETY VALVE WATER RELIEF VALVE STEAM ENGINE INDICATOR STEEL TYPE for TYPEWRITERS Stencils Steel Stamps Rubber and Metal Type Wheels. STANDARD TYPEWRITER. Gold Medal-Paris Exposition 1889. REMINGTON NICKEL PLATING ZUCKER 8cLEVETT NOW READY. NICKEL ANODES NICKEL SALTS COM POSITION BUFFING WHEELS ELECTRO & NICKEL PLATING OUTFITS. BLOW-PIPE 5ETS OF CASTINGS OF MODEL ENGINES CATALOGUES FFt E E. BARNES" PAT FOOT POWER ACHINERY. ONL SEVEN D CATES IRON WORKS 50 C So. Clinton St. CHICAGO. Weather strip A. C. 42496 fWbverfigiernento. Back Page each insertion 81.00 a line. USE ADAMANT WALL

RM2AFR41T–. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. een in the figure. Thesteam pressure is thus assisted in holding the valve open, aswell as raising it much higher, giving a larger opening thanwould be the case if the valve were lifted by the pressure alone.Spring loaded valves are mostly used on marine boilers,locomotives and portable boilers, and wherever outside disturb-ances interfere with the action of a weight. A pop safety valve is a com-mon form of safety valve and takesits name from the fact that it takesa little mo

RM2ABX6DN–STEAM ENGINE INDICATOR UGH I NM Ka-SINKING MACHINERY MANUFACTURERS. The American Well Works 3 Elm St. TM% OIL WELL SUPPLY CO. Ltd. POP SAFETY VALVE ROCK DRILLS AIR COMPRESSORS MINING AND QUARRYING MACHINERY Ingersoll - Sergeant Rock Drill Co. AIR COMPRESSORS & TO BUSINESS MEN SPRIMPRIMPIRIS Punching Presses IIES AND OTHER TOOLS SHEET METAL 00008. ARTESIAN and Oil Well Supply C STEVENS PATENT RELIABLE DIVIDER. No.6I With Thumb Attachments. SPYGLASSES & ASTRONOMICAL TELESCOPES and SQUARE HOLES. Mortising Escutcheons Core Boxes etc. In BRIDGEPORT GUN 1 MPLEMEN T CO. 17 Maiden Lame New York. T. M

RM2AJ2GB1–The boys" book of engine-building; . e the weight;this can be a piece of rod V2 inch in diameter and% inch long; saw a slot Yi6 inch wide and /4 inchdeep and put a pin through the upper end. Slipthe weight on the lever and screw the safety valveinto the boiler shell. A Spring or Pop Safety Valve.—A spring orpop safety valve is used on locomotives and youcan easily make one for your model. If you willtake a look at Fig. 53, which shows a cross-sec-tion view of the locomotive boiler, you will seethat the safety valve pipe which leads throughthe steam dome outside is Vs inch in diameter andthe en

RM2ABX62G–Patent Foot Power Machinery Complete Outfits. Seneca Falls Mfg. Co. SEBASTIANMAY&CO"S :LATHE PRIMARY BATTERIES INCANDESCENT LAMPS 8.120 Park Ave Brooklyn N.Y. POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE STEAM ENGINE INDICATOR "ELECTRIC" SPIRAL SCREW DRIVER $1.25 DMIIII $1.25 Barnes" Foot-Power Machinery SEND for FREE ILLUSTRATED CIRCULAR and Table of Contents. MUNN & CO. Publishers BRASS RACKS & PINIONS. S Medford Street IMPROVED SURFACE GAUGE. USEFUL BOOKS. MUNN & CO 361 Broadway. New York. EDISON EDISON Harrison LAMPS LAMP CO. N. J. UNEQUALED $2.00 per 100 Sq. Feet. INDIANA PAINT

RM2ABX5TE–aibvertisementts. NEW KODAKS PATENTS! POP SAFETY VALVE WATER RELIEF VALVE CROSBY STEAM GAGE & VALVE C Eltve1i:2: THREE ELEVATORS A Ony is the output of OTIS BROTHERS & CO."S Passenger and Freight Elevator Works THE OTIS ELEVATOR BRANCH OFFICE" BLBEAVARN.HOSTABALLOULSRObli0; SLATE"S PATENT CUTTING-OFF TOOL DWIGHT SLATE MACIIINE CO. 2-3 (fcientific American ESTABLISHED 1546. The Most Popular Scientific Paper la the World. M MTN 1T etc C . 36 I Broadway New York. er XI MUNN & Co. 361 Broadway. N. 361 Broadway New York. PRINTING INKS. JAMES MEANS $3 SHOE. Victor Bicycles Chicopee Palls Mass

RM2ABXFD9–SENECA FALLS MFG. COMPANT. 009 or P1ETRL WOOERS SCREW EYES Roll Thread. Gimlet Point. BLAKE & JOHNSON $100 Queen Builder s Transit Water Emery Tool Grinder AMERICAN PATENT Pop Safety Valve THE - BILLINGS- PIPE -WRENCH THE BILLINGS & SPENCER CO. DORMAN"S VULCANIZERS THE J. F. W. DORMAN CO. M INDEX OF INVENTIONS For which Letters Patent of the United States were Granted ronill baek1. Walton .5%4 581.1M wmol %-INCH AUGER BITS POWER? POWER? POWER" VICTOR VAPOR ENOCH. GAS ENGINE GRAND RAPIDS. MICH. THE IMPROVED GAS ENGINE. C. F. RICHARDSON & SON I". 0. Box 977 ATHOL MASS. U.S. A. DYNAMOS

RM2ABX6PX–USE ADAMANT WALL PLASTER It is Hard Dense and Ad 309 E. Genesee St. Syracuse. N. Y. Patent Foot Power Machinery Seneca Falls Mfg. Co. STEREOTYPING; THE PLASTER AND The Sebastian-May Co. LATHES SIDNEY OHIO. EDISON LAMPS For Batteries or Dynamos. EDISON LAMP CO. HARRISON N. J. POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE STEAM ENGINE INDIOATOR NEW YORK. LONDON. CROSBY STEAM GAGE &VALVE C IT.Xniall MASON"S FAMOUS BATTERY., scientific american, 1890-12-11

RM2CR6XCP–. American engineer and railroad journal . ONE TONyTRAVELLINQiCRANE. U. -Or Q <-«*-F irffa -or i^r ^ c: rrj c. MUFFLED POP SAFETY VALVE. PNEUMATIC HOIST -2 PIPE TAP-

RM2ABWPBF–THE BAKER BLOWER. FORCED BLAST. The best In the World for Charcoal Blast Furnaces. polas f or Stove Foundries etc. WILBRAHAM BROS PHILADELPHIA PA. 30S END FOR OUR CATALOGUE. "VS THE SCOVILL "Pop" Safety Valve For Locomotive Stationary Marine and Portable Boilers. Send for descriptive circulars and price lists t THE HANCOCK INSPIRATOR CO. BOSTON MASS. HUB MACHINERYHUB TURNING. HUB MORTIS ing and Hub Boring Machines. Send for price list and circulars. DAVID JENKINS Sheboygan Wis. PATENT QUICK Adjustable Stroke SHAPERS Can be Changed while In Motion. E. GOULD & EBERHARDT ENNsYLIIAN I A 1881

RM2CRANYW–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . friction ofslide valves, but they did not becomepopular as long as the valves weresmall. About 1880 balanced valvesgradually began to come into favor, anda few years afterward balanced valvesbecame a regular item of specificationsfor new locomotives. RICHARDSON BALANCED VALVE. About 1880 George Richardson, noted as the inventor of the pop safety valve,made an improvement upon the Morsebalancing device which greatly in-creased its efficiency and brought it rap-idly into popularity. By means of

RM2ABX4EG–Inside Page each insertion . 75 cents a line. Back Page each insertion . 81.00 a line. STORES OFFICES and DESK ROOM PENBERTHY IMPROVED AUTOMATIC INJECTOR. Stored Energy ELECTRICAL ACCUMULATOR COMPANY Edco System. THE ELECTRIC DYNAMIC COMPANY No. 224 Carter St. Philadelphia Pa. Patent Foot Power Machinery LABOR SAVING Machinery Seneca Falls Mft. Co. USE ADAMANT WALL PLASTER It is Hard Dense and Syracuse N. Y. IF YOU FAIL MASON REGULATOR CO.BostonMaos. 164 Griswold Street Detroit Mich. U. S. A. AMERICAN POP SAFETY VALVE. An SEBASTIANMAYS6CO"S Powe11r 165 W. 2d St. Cincinnati 0., scientific

RM2CH0DRE–. Science of railways . Fig. 2. Fig. 3. Exterior View. Sectional View. The Star Improved Open or Plain Locomotive Pop Safety Valve. Figs. 4 and 5 illustrate the muffled Star pop safetyvalve, which is seen to be similar in construction,with the addition of the top hood, or muffler, whichtends to greatly reduce the noise of the escapingsteam, and hence is of considerable advantage. Boththe plain and the muffled valveshave large reliefpowers, and are made to withstand the highest pres-sures used on locomotives. The slotted domes andmufflers have their real aim in preventing dirt andcinders from e

RM2ABWPYE–VIOLIN OUTFITS. of the United States on l to 3 buying. Violin Outfits NEW ELEMENTS of HAND RAILINC. SPEAKING TELEPHONES. THE AMERICAN BELL TELEPHONE COMPANY AMERICAN BELL TELEPHONE COMPANY HOPEPIDEAF Dr. Peck"s Artificial Ear Drums PERFECTLY RESTORE THE HEARING BOILER SHOP ROLLS RADIAL DRILLS Etc. SEND T HILLES It JONES WILMINGTON DEL. THE SCOVILL "Pop" Safety Valve THE HANCOCK 1INSPIRATOR CO. BOSTON WOOD-WORKING MACHINERY. BENTEL MARCEDANT & CO. .471ILTON 070 U.S. A. CAKE GRIDDLE DO YOUR OWN PRINTING Li.i "BLAKE"S CHALLENGE" ROCK BREAKER. RUPTURE MACHINERY $66 THE BAKER BLOWER. Charcoal

RM2CH0AN0–. Science of railways . Fio. 15.Ashton Open Pop Safety Valve.. Fig. 16.Ashton MuflEler. These valves may be regulated from the outside top of thepop and are ordinarily provided w^ith a lock for securing thecap and thus preventing the adjustment being tampered withby irresponsibles. LOCOMOTIVE INJECTORS. This chapter, while devoted to locomotive injectors,does not pretend to treat them in their entirety; itdoes, however, contain brief descriptions and practicalinformation on various types, in common use onlocomotives. The injector was patented in 1858 by Giffard, aneminent French engineer, and

RM2ABX5H4–The Best Periodicals for Family Reading." Harper"s Magazine Harper"s Weekly Harper"s Bazar Harper"s Young People Postage Free In the United States Canada and Mexico. "No Family can afford to be without them." OTIS Otis Brothers & Co. 38 Park Row New York WALNUT ALLENTOWNPA. CASTINGS Hack Page each insertion 51.00 a line. Makes 100 Instantaneous Division of. Labor The Eastman Dry Plate & Film Co. Rochester N.Y. I 15 Oxford St. London. Economy Reliability Simplicity Safety. POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE STEAM ENGINE INDICATOR AERICAIIILL TIMOR CO. 95 MILK ST. BOSTON

RM2CGWT45–. Science of railways . at speed is reversed and the throttle not opened,jnany railroads use a combined vacuum and pressurerelief valve, as shown in Fig. 7, on all steam chests,it is hardly necessary to describe in detail the pressurerelief valve thus used, as its principle is identical withthat of the locomotive pop safety valve, which is fullydescribed and illustrated elsewhere in this volume.If, in place of the cap shown in the vacuum rehef LOCOMOTIVE APPLIANCES. 581 valve here illustrated, a pop safety valve should bescrewed, the result would be a combined vacuum andpressure relief steam-c

RM2ABX5JT–Inside Page. each insertion 75 cents aline. Beaver Falls Pa. TO BUSINESS MEN 361 Broadway. New York. TIE AM:RICANIMITEPIDECO. VIOLINS EXCHANGED & Parker 66Pine Street York. Victor Bicycles BOSTON. MASS. TYPEWRITER NEW ERA PATENTS! --okott. BARREL KEG Hogshead E. & B. HOLMES ANEW CATALOCU 1000 THE ORIGINAL UNVULCANIZED RACKING JENKINS B08.i THE FRED "K CRANE CHEMICAL CO. WElTMYER PAT1MT FURNACE. BOILERS OF EVERY DESCRLPTION. Manufactured by FOUNDRY & MACHINE DEPT. Harrisburg Pa. U. S. A. POP SAFETY VALVE WATER RELIEF VALVE STEAM ENGINE INDICATOR REMINGTON STANDARD TYPEWRITER. Gold Medal-Paris

RM2CH0E3G–. Science of railways . Fig. 2. Fig. 3. Exterior View. Sectional View. The Star Improved Open or Plain Locomotive Pop Safety Valve. Figs. 4 and 5 illustrate the muffled Star pop safetyvalve, which is seen to be similar in construction,with the addition of the top hood, or muffler, whichtends to greatly reduce the noise of the escapingsteam, and hence is of considerable advantage. Boththe plain and the muffled valveshave large reliefpowers, and are made to withstand the highest pres-sures used on locomotives. The slotted domes andmufflers have their real aim in preventing dirt andcinders from e

RM2ABX56N–Low Pressure Steam or Hot Water Heating. The Dunning Patent Wrought-Iron Boiler Victor Bicycles BOSTON MASS TO INVENTORS AND MANUFACTURERS The 58th Annual Exhibition JKODAK CAMERA The Eastman Dry Plate & Film Co. Rochester N.Y. 5 Oxford St. London. PATENTS. HIGH-GRADE ONLY. COLUMBIA Bicycles Tricycles Tandems Safeties. EIKONOGEN. 0 BUSINESS MEN. POP SAFETY VALVE -JD( IMPROVED STEAM GAGE POWERFUL! DIFFUSIVE! INDUSTRIAL EIGHT COMPANY 196 Temple Court New York City. TR AERICAIILL CI. 95 MILK ST. BOSTON MASS. OIL ENGINES. T7IIIIAMMEMTM=1.13. Electric Indicating and Recording PAINT YOUR ROOFS

RM2CH0DJP–. Science of railways . Fig. 4. Fig. 5. Exterior View. Sectional View. The Star Improved Locomotive Muffled Pop Safety Valve. the discharge when the valve pops will be greater orless correspondingly. MEADY MUFFLED LOCOMOTIVE POP SAFETYVALVE. The cut, Fig. 6, represents the Meady muffled loco-motive pop safety valve, showing its internal con-struction. It will be obser^-ed that the valve properprojects upward through the perforated casing ofthe valve, enclosing within it the spring which holdsit to its seat; and the upper or outward side of thevalve is open to the air at all times, so that when

RM2ABX6WW–Inside Page each insertion 75 cents a line. Back Page. each insertion $1.00 a line. USE ADAMANT WALL PLASTER PARABOLON MAGIC LANTERN 16 Beekman Street New York City U. S. A. POP SAFETY VALVE STEAM ENGINE INDIOATOR =1ST OF Books on Electricity. Alternate Current Transformer in Theory and Dictionary of Electrical Words Terms and Electrical Rules Tables Tests and Formalm. MUET.T1V1V- xft 30 CORI I-. CIASGOWITIAND""""" eaters. IDEAL MUSICAL BOX Is the Latest Invention in Swiss Musical Boxes LITTLE HERCULES DRILL CHUCK ONEIDA WC. CO. Stored Energy THE ACCUMULATOR COMPANY It is Hard Dense and Ad

RM2CH0AWM–. Science of railways . ingPlfl Consolidated Muffler Pop SafetyValve Consolidated Muffler Pop SafetyValve—Sectional View wing guides of the valve feather, or disc; the low spindle bear-ing upon feather; the outside overlap of the feather trunkupon the case above, over (not into) which joint the steamdischarge flows. This construction leaves no area upon thetop of the disc or feather, exposed to the steam pressure inthe valve case. 238 LOCOMOTIVE APPLIANCES. THE ASHTON POP SAFETY VALVE This valve is made both open and with muffler. It is aparticularly efficient valve and used very extensively o

RM2ABX6JX–PROPOSALS. proposals for Constructing Steam Snagboat. New York. Other foreign patents may also be obtained. INVENTORS! WORKING MODELS. EDISON LAMPS For Batteries or Dynamos. We will send free Catalogue E How to Make a Cheap Battery HARRISON N. J. MACHINISTS" FINE TOOLS. IDEAL MUSICAL BOX 15 the Latest Invention in Swiss Musical Boxes It Is the Sweetest and Most Perfect Instrument NEW YORK. ITS. Engineer Offi cc oom 9 134 Van Buren ITS. E.n gi n eer 0 ffice Boston Mass. October 15 ITE KEEP COOL! CLARK"S FAINT MI. GEO. P. CLARK POP SAFETY VALVE Stored Energy THE ACCUMULATOR COMPANY 44 Broadway N

RM2CH0JTD–. Locomotive engineering : a practical journal of railway motive power and rolling stock . CIn/*a;*1/* muffler Pop ^ vuIV safety Ualoe Is the pioneer and is the best. * » ** I* The Coale Muffler Pop Safety Valve ... Is the standard on leadi-ig railroads and power plants in theUnited States. Specify our valves on your new locomotivesand boilers. Simple in construction and reliable under allconditions. Sample put on trial on application. The Coale Muffler and Safety Valve Company,Charles & Lexington Sts., Baltimore. Md. BY USING garlands English Uarnishcs You keei keep your cars on the road lon

RM2ABX4MH–Patent Foot Power Machinery Complete Outfits. Seneca Falls Mfg. Co. DO YOUR OWN PLATING CABINET WOODS FRET SAW or BRACKET WOODS AUTOMATIC INJECTOR. Penberthy injector Co. Detroit Mich. 9-ibverfisentenfo. It is Hard I) ense and ADAMANT MFG. CO. Syracuse N. V. Inside Page each insertion . 75 cents a line. Back Page each insertion - 61.00 a line. USE ADAMANT WALL PLASTER SEBASTIANMAY&CO"s Improved Saw Cutting Foot & .I.A.THES 165W. 26 St Cincinnati 0. AMERICAN POP SAFETY VALVE. AMERICAN STEAM GAUGE COMPANY 34 Chardon Street Boston Mass. DAMPER REGULATORS OIL WELL SUPPLY CO. Ltd. 91 & 92 WATER

RM2CGPFTN–. Locomotive engineering : a practical journal of railway motive power and rolling stock . ConsolidatedSafety Valve Co.s ORIGINAL RICHARDSON POP SAFETY VALVES are the Standard on manyroads. The Best Muffler EXTANT. Sample sent on trial. WORKS AT Bridgeport, Ct.. 87« LOCOMOTIVE ENGINEERING. - ^ yjdIV Safety Uaipe Is the pioneer and is the best. I*I** It»I*I* The Coale Muffler Pop Safety Valve ^. Is the standard on leadi.ig railroads and power plants in theUnited States. Specify our valves on your new locomotiveiand boilers. Simple in construction and reliable under allconditions. Sample put on

RM2ABWPHH–THE PORTER-ALLEN High Speed Steam Engine. Mill Stones and Corn Mills. ERICSSON"S DELAIVIATER IRON WORKS COLD PENS. Boiler Feeder THE J. L. MOTT IRON WORKS Jarvis Furnace Co. MACHINISTS" TOOLS. TO INVENTORS AND MANUFACTURERS Wig. A. HARRIS Geo. W. Read & Co. MAHOGANY Cabinet liA7cacacia. THIN LUMBER 186 to 200 Lewis St. New York. THE SCOVILL "Pop" Safety Valve THE HANCOCK INSPIRATOR CO. ILWAOHNS I I" LIQUID PAINTS H. .W. JOHNS M"F"C CO. 87 Maiden Lane New York. an Es Double Screw Parallel Leg Vises. BOILER COVERINGS OUR "TEST" HOSE METHYL CHLORIDE WOOD-WORKING MACHINERY. HAMILTON 0E0 U. S. A

RM2CR4K70–. Locomotive engineering : a practical journal of railway motive power and rolling stock . ebbe you do, Swipesy ; but -ou ainta firin for a long-geared, lanky galootthat goes over the hull road a-drai^oin thelinks on the tics ! Pop Valve Reminiscences. BV F. F. HEMENWAY. In 1866, Geo. W. Richardson inventedwhat has since come to be universallyknown as the pop safety valve. It waschristened by enginemen, the word safetybeing omitted, getting its name just asmany another thing has got its name.hen a name comes in this way, itwould be an eisy matter changing thelaws of the ancient Medes and Pe

RM2ABX5YF–Mechanical Drawing SELF-TAUCHT. Fourth Edition thoroughly revised and corrected. 12M.A.DY. BY THE SAME AUTHOR 810 Walnut St. Philadelphia Pa U.S. A. ARCHITECTURL BOOR. Useful Beautiful and Cheap. MUNN & CO. Publishers 361 Broadway New York. DWIGHT SLATE MACHINE CO. Gates Cornish RollsPulverizer Gates Rock and Ore Breakers 50 C So. Clinton St. Chicago. POP SAFETY VALVE Greene Tweed & Co. Barnes" New Sensitive Drill W. N". az JNO. BARNES C. 1999 Ruby St Rockford Ill. THE ALLARD" SPIRAL D R SCREW RIVE EVANS FRICTION CONE CO. ING and CHANGING SPEED PROMPT EFFICIENT. and NOISELESS. Address 85 Water

RM2CGRD0B–. Locomotive engineering : a practical journal of railway motive power and rolling stock . Crosby $teaiti Qm and Halve Co., Boston, ma$$., U.S.fl. < ^m — new Vork, Cblcago.Condon. Crosby Pop Safety Valve for allclasses of boilers...*Muffled Pop SafetyValves. .< .iWater Relief Valve forpumps, hydrants, Iiose, etc. <,* Revolu-tion Counters, Rotary or ReciprocalMotion. ,* ^^ Spring, Seat, Globe andAngle Valves. ,.* Original Chime BellWhistles..* .* .* .•* ^* .* .* .*.*.*.•».*.*.* i^a-i THE CROSBYSTEAM ENGINE INDICATOR. In no department of science has there been greaterprogress made durin

RM2ABX55C–THE BRIDGEPORT WOOD FINISHINC BREINIGS L1THOGEN SILICATE PAINT" Inside Page. each insertion . . 25 cents a line. Back Page each insertion - 51.00 a line. Victor Bicycles BOSTON MASS. KODAK CAMERA Division of Labor Price 515.00. Reloading S"2.00. The Eastman Dry Plate & Film Co. Rochester N.Y. 5 Oxford St. London. . STEAM ENGINE INDICATOR al IMPROVED STEAM GAGE POP SAFETY VALVE HIGH-GRADE ONLY. COMPTOMETER AR ITMETHICAL PROBLEMS ALL NEW ERA COLUMBIA Bicycles Tricycles Tandems Safeties. Catalogue free. POPE MFG. The Dunning Patent Wrought-Iron Boiler Low Pressure Steam or Rot Water Heating.c

RM2CGWW8B–. Locomotive engineering : a practical journal of railway motive power and rolling stock . ater Relief Valves For pumps, hydrants, hose, etc. Crosby Improved Steam Gages, And all other pressure and vacuum gages. Crosby Single Bell Chime Whistles For railroads, mills, factories, marine buoys, etc. Crosby Spring-Seat Valves, Globe and angle, for high pressures. Warranted. Crosby Patent Gage Testers. Accurate and altogether reliable. Revolution Counters, Pressure Recorders,Blow-Off Valves. The Crosby Locomotive Pop Safety Valve. Our claims for merit in a Locomotive Poj> Safety Valve are as fol

RM2ABX5KC–ORE SEPARATORS REVOLVING.s. SHAKING SCREENS Automatic S nnkler Thermostatic Fire Alarm Operated Thy Electricity. The J. C. MACKEY CO. 316 & 318 S. Water St. Syracuse N.Y. U. S. A. "ATE" Hide Faced Hammers Bench Shears —THE ECONOMY HEATERS WARM AIR Air r1"" 3E-ME MinET.C)1WIL" for Motors a Specialty. MONEY SALARY Standard Silverware Co. Boston Mass. FREE BRICK MACHINES FROM10 TO100000 CAPACITY PER DAY. TILE MACHINES FACTORIES. STYLES. CLAY Crushers THE FREY SHECKLER CO. BUCYRUSO. i-te-47 EA=G1)77 J..CoLT &C POP SAFETY VALVE Single Bell Chim %V ev-ooime YOUR NAME ON THIS NOYELTYlOc PLAYS EVANS

RM2CH0EDE–. Science of railways . warning before blowing hard,thus enabhng the fireman tocontrol his fire or regulate thesupply of feed water beforestrong popping occurs. Usedon high pressure boilers, it opensand closes gradually, thus pre-venting excessive strains uponthe boiler. By means of the spring boltand adjustable ring both thepoints of opening and closingmay be changed without remov-ing the valve or reducing the^, ^ FiG.i. steam in the boiler. The con- The Coale Pop Safety Valve , , • r. , i on ^ and Muffler. structiou 01 tho muffler reduces the noise of the escaping steam to a minimum. Thisfea

RM2ABX53A–PIPE COVERINGS TIM AM:MUNI:IL TEPEN:C 95 MILK ST. BOSTON MASS. CAS ENCINE NO BOILER. NOCOAL. NO ENGINEER. INSTANTLY STARTED. DURABLE RELIABLE Van Dozen Gas Engine CO. Absolutely Fire Proof. COInt.ZI.TC33E21 451PEPTC CC=0. FCC)01" ESTI-K XV. Ir. THE ONLY PRACTICAL Low-Priced Typewriter First-Class Rapid Durable Business WORLD TYPEWRITER 44 charac ters $10; 77 characters $ 15. POP SAFETY VALVE AMA IMPROVED STEAM GAGE STEAM ENGINE INDICATOR The CUSHMAN Patent The Cushntan Chuck Co.; Hartford Conn. JENKINS BROS. 71 John Street New York. 21 North 5th S SECTIONAL" INSULATED AIR COVERINGS AND ALL

RM2CGWRKM–. Locomotive engineering : a practical journal of railway motive power and rolling stock . W. J. CoUUT.NEY, Mgr. R. R. Dept. rrt. Matter Mechanic. ZUPCsfiU muffler Pop« V vflI v Safety Ualoe Is the pioneer and is the best. *ititititItititititit The Coale Muffler Pop Safety Valve „. Is the standard on leading railroads and power plants in theUnited States. Specify our valves on your new locomotive*and boilers. Simple in construction and reliable under allconditions. Sample put on trial on application. The Coale Muffler and Safety Valve Company, Charles & Lexington Sis., Baltimore. Md. S. J. MEE

RM2ABX542–Victor Bicycles BOSTON MASS. 2 THE KODAK CAMERA Makes 101) instantaneous Price S25.00. Reloading S2.0. The Eastman Dry Plate & Film Co. Rochester N. Y. 5 Oxford St. London. ANNOUNCEMENT! 35 Pam Row New York. LANTERNS ci41) PATENTS. IGH-GRADE ONLY. COLUMBIA Bicycles Tricycles Tandems Safeties. Catalogue free. POPE MFG. OB ROY LINEN HOSE . K. COTTON MILL HOSE & MILL SUPPLIES. BOSTON WOVEN HOSE CO. 34 Devonshire Street Boston. 222 Lake Street Chicago. POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE YPE WRITER ATIO N Al TYPEWRITER EXCHANGE 161 La Salle Street Chicag ill. TN AM:RICAN BELL

RM2CPACRF–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ted to 600 lbs. cold water before beingshipped to customer. They are renewable in everypart, also absolutely leak proof. Made from our specialhigh grade steam metal and guaranteed for the highestpressure. MANTTFACTtTRED BT Star Brass Manufacturing Co. 108-114 E. Dedham Street) BOSTON, MASS. BRANCH OFFICE: 38 Cortlandt Street, New York City 1,1 *-l are always in season on a Locomotive The t-ntire adjiistiiient of the American fluffledLocomotive Pop Safety Valve ib locau-d directlyunder the cap

RM2ABX63D–Victor Bicycles! READILY ATTACHED OR REMOVED BY ANY ONE. Para Building 35 Warren St. New York. W 30 PIN S" Asbestos Sectional Pipe Covering Elevator Service. OTIS BROTHERS & CO. ELEVATORS. HIGHEST GRADE ONLY. STEAM ENGINES AMES LEFFEL & CO. SPRINGFIELD 00 VITAL STATISTICS. MILLWRIGHT CA DINETMAKER c) CHAS. A. STRELINCER & CO. Detroit Mich. $1.50 altgse.g. $1.50. PLETE STEAM SEVEN D ARS JENKINS STANDARD PACKING! Inc POP SAFETY VALVE STEAM ENGINE INDICATOR PATENTS! MUNN & CO. Solicitors of Patents ROCHESTER OPTICAL CO. NEW KODAKS THE EASTMAN COMPANY POPE MFG. CO. 95 MILK ST. BOSTON MASS. ARVIN

RM2CGRD02–. Locomotive engineering : a practical journal of railway motive power and rolling stock . IMPROVED TUBE EXPANDER. Wheel Presses, and Direct ActingSteam Hammers* RICHARD DUDGEON, 24-26 COLUMBIA STREET, NEW YORK CITY. Advertising Foundry, L. E., 1896. 592 LOCOMOTIVE ENGINEERING,. Crosby $teaiti Qm and Halve Co., Boston, ma$$., U.S.fl. < ^m — new Vork, Cblcago.Condon. Crosby Pop Safety Valve for allclasses of boilers...*Muffled Pop SafetyValves. .< .iWater Relief Valve forpumps, hydrants, Iiose, etc. <,* Revolu-tion Counters, Rotary or ReciprocalMotion. ,* ^^ Spring, Seat, Globe andAngl

RM2ABX681–FREE. NEW CATALOCU —OF VALUABLE PAPERS SAFE BOILERS FOR AMATEUR WORK STEEL TYPE for TYPEWRITERS Stencils Steel Stamps Rubber and Metal Type Wheels. ESTABLISHED 1546. 52 Numbers it Year. M"C.71NT1NT dm CO 361 Broadway New York. Scientific American Supplement. 361 Broadway New York. USE ADAMANT WALL PLASTER Itis Hard Dense and Ad. Seneca Falls Mfg. Co 695 Water St Seneca Falls. N. Y. SEBASTIANMAY&CO"S erJ4 Pow A LATHE ROCK DRILLSCH AIR COMPRE.SSORS git MININGTUNNELING POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE STEAM ENGINE INDICATOR ogiNAGIC LANTERN; SPYGLASSES & ASTRONOMICAL

RM2CGY7YX–. Locomotive engineering : a practical journal of railway motive power and rolling stock . COMPLETE WITH BOILER. The A. S. CameronSteam Pump Works, Foot of East Twenty-third Street, Send for Illustrated Catalogue. NEW YORK. THE PILGRIM.-H0L1DAY NUMBER. Sent free to any address on receipt of six...■ins in postage. Write to Geo. II. H.afford,General Passenger Agent. Chicago, Milwaukee& St. Paul Railway, Old Colony Building,Chicago, 111. 3!)4 LOCOMOTIVE ENGINEERING. CbeA^lA muffler Pop- ^ VW IV safety Uatoe Is the pioneer and is the best. * The Coale Muffler Pop Safety Valve ... Is the standard o

RM2ABX6MH–LATHE SEBASTIANMAY&GO"S Foot ROCK DRILLS AIR COMPRESSORS MINING AND QUARRYING MACHINERY Ingersoll - Sergeant Rock Drill Co. OFINC! BLOW-PIPE Fine Taps Dies Reamers Etc. WILEY & RUSSELL MFG. CO. Greenfield Mass. CINCINNATI OHIO. TO BUSINESS MEN 301 Broadway New York. MODEL ENGINES 0 0 CANDLE" P GrWfirtia TOM T USE ADAMANT WALL PLASTER POP SAFETY VALVE IMPROVED STEAM GAGE WATER RELIEF VALVE LIGHTNING WELL-SINKING OIL WELL SUPPLY CO. Ltd. ARTESIAN XISS 0AMP.:: CHRISTMAS DINNER GOOD HOUSEKEEPING "TEN MORNINGS IN THE KITCHEN., scientific american, 1890-11-15

RM2ABX9PW–MODERN STEAM ENGINES UP TO DATE JUST READY. BY THE SAME AUTHOR. HENRY CAREY BAIRD & CO. AND BEST ible Instrue Sport Travel Recreation arid. Fiction OUTING CO. Limited NEW YORK. WE SEND FREE THOMPSON IMPROVED INDICATOR 5000 IN USE. POP SAFETY VALVES. STEAM PRESSURE GAUGES ETC. 34 Chardon Street Boston Mass. PROPOSALS. A New and Valuable Book. Delaney"s Metallic Gaskets $ I 0.00. to $5 OM 0 SOLID SILYERINE OUT sample ViINGTON Writing Machine of the Speed World"s Columbian Exposition. Durability. Send for Catalogue. EDISON MIMEOGRAPH CHAPMAN VALVE MANUFACTURING COMPANY FI3ELE Igr It ID FL .A.Lif

RM2ABX5B0–COMPTOMETER ALL PROBLEMS ELEVATORS Otis Brothers & Co. 35 Park Row New York. I-1 W J01-TS" Asbestos Sectional Pipe Covering A Non - Conducting Covering for Steam and Hot Water Pipes etc. READILY ATTACHED OR REMOVED BY ANY ONE. X. Wa-co:R.22.gs nezigtxvizfetatu.rixks Paints Asbestos Roofing etc. "0N CE SAFETY WATER COLUMNS Inside Page each insertion 75 cents a line. A NEW INVENTION!N Sure Grip Steel Tackle Block New York Stencil Works Mfrs. Victor Bicycles BOSTON MASS. EIKONOGEN. JENKINS" AUTOMATIC AIR VALVE HIGH-GRADE ONLY COLUMBIA Bicycles Tricycles Tandems Safeties. CLARK"S "TA TRUCK

RM2CGPR5X–. Locomotive engineering : a practical journal of railway motive power and rolling stock . 732 LOCOMOTIVE ENGINEERING. CI)cAa;|Ia muffler Pop« V(IK Safety uaioe * The Coale Muffler Pop Safety Valve ... j* Is the standard on leading railroads and power plants in the ^ United States. Specify our valves on your new locomotives f* and boilers. Simple in construction and reliable under all * conditions. Sample put on trial on application. Is the pioneer and is the best. I* The Coale Muffler and Safety Valve Company, Charles & Lexington Sis., Baltimore, Md. New York Office, Taylor Building, 39 Cort

RM2CH2F0N–. Locomotive engineering : a practical journal of railway motive power and rolling stock . is just as good a bolt as any made—the best charcoal iron -sesses in addition the self inspection and warning features. -and pos- An Inspector that inspects. Falls Hollow Staybolt Co.,Cuyahoga Falls, 0., U.S.A. 8 o o oo ooo ooo ooo 18 182 LOCOMOTIVE ENGINEERING. « ^ y<* I v safety Mw Is the pioneer and is the best. The Coale Muffler Pop Safety Valve ... Is the standard on leading railroads and power plants in theUnited States. Specify our valves on your new locomotivesand boilers. Simple in constructi

RM2CGPR8H–. Locomotive engineering : a practical journal of railway motive power and rolling stock . ConsolidatedSafety Valve Co.s ORIGINAL RICHARDSON POP SAFETY VALVES are the Standard on manyroads. The Best Muffler EXTANT. Sample sent on trial. WORKS AT Bridgeport, Ct.. 732 LOCOMOTIVE ENGINEERING. CI)cAa;|Ia muffler Pop« V(IK Safety uaioe * The Coale Muffler Pop Safety Valve ... j* Is the standard on leading railroads and power plants in the ^ United States. Specify our valves on your new locomotives f* and boilers. Simple in construction and reliable under all * conditions. Sample put on trial on ap

RM2CGPKC1–. Locomotive engineering : a practical journal of railway motive power and rolling stock . ConsolidatedSafety Valve Co.s ORIGINAL RICHARDSON POP SAFETY VALVES are the Standard on manyroads. The Best Muffler EXTANT. Sample sent on trial. WORKS AT Bridgeport, Ct.. 804 LOCOMOTIVE ENGINEERING. CI)cA/;|Ia muffler Pop.. ^ V^g IV Safety ualoe Is the pioneer and is the best. I*i»i»I*I*<•i»It I*I* The Coale Muffler Pop Safety Valve ... Is the standard on leading railroads and power plants in, theUnited States. Specify our valves on your new locomotivesand boilers. Simple in construction and reliabl

RM2CGPARF–. Locomotive engineering : a practical journal of railway motive power and rolling stock . 1022 LOCOMOTIVE ENGINEERING. « The Coale Muffler Pop Safety Valve^ ^^- ^^ ^■^ * ^^ ^Cll vly VrWiVV J conditiotis. Sample put on trial on application Coalc t- ||C £^^ i^ ^fc I /% ||Zltlll>l r ▼ Ik i Is th« standard on leading railroads and power plants in the ^ ^ ft LM^m IAT. - ^ J United States. Specify our valves on your new locomotives It and boilers. Simple in construction and reliable under all * conditions. Sample put on trial on application. J The Coale Muffler and Safety Valve Gjmpany, Is tht

RM2CGPARM–. Locomotive engineering : a practical journal of railway motive power and rolling stock . ConsolidatedSafety Valve Co.s ORIGINAL RICHARDSON POP SAFETY VALVES are the Standard on manyroads. The Best Muffler EXTANT. Sample sent on trial. WORKS AT Bridgeport, Ct.. 1022 LOCOMOTIVE ENGINEERING. « The Coale Muffler Pop Safety Valve^ ^^- ^^ ^■^ * ^^ ^Cll vly VrWiVV J conditiotis. Sample put on trial on application Coalc t- ||C £^^ i^ ^fc I /% ||Zltlll>l r ▼ Ik i Is th« standard on leading railroads and power plants in the ^ ^ ft LM^m IAT. - ^ J United States. Specify our valves on your new locom

RM2AWHWW0–Locomotive appliances . fcjt Fig. 10. External View. Pig. 11. Sectional View with Lever. Crosby Muffled Locomotive Pop Safety valves. 13Q LOCOMOTIVE APPLIANCES. THE CONSOLIDATED LOCOMOTIVE POP SAFETYVALVES. Figs. 12 and 13 represent two different types ofmuffled safety valves, made especially for locomotiveuse. These valves were formerly known as theRichardson pop safety valves. The advantage to be derived from the use of thismuffled valve in place of the ordinary open or plain.

RM2AWHX5J–Locomotive appliances . fcjt Fig. 10. External View. Pig. 11. Sectional View with Lever. Crosby Muffled Locomotive Pop Safety valves. 13Q LOCOMOTIVE APPLIANCES. THE CONSOLIDATED LOCOMOTIVE POP SAFETYVALVES. Figs. 12 and 13 represent two different types ofmuffled safety valves, made especially for locomotiveuse. These valves were formerly known as theRichardson pop safety valves. The advantage to be derived from the use of thismuffled valve in place of the ordinary open or plain

RM2AG7NDJ–. The Locomotive. down, so he wentup on the top of the boiler and screwed the pop down (which wouldof course raise instead of lower the blowing pressure), and waspretty sure that it blew at 80 lbs. The safety valve could not befound after the explosion. The boiler had not been inspected withinthe two years previous to the explosion, nor had the steam gauge beentested within that time. Upon examining the internal surface of what was left of theboiler it was found that the shell plate and tubes were very badlypitted and grooved. The break on the plate edges was abrupt withno knife edge anywhere.

RM2AN6WDJ–Heating and ventilating buildings : a manual for heating engineers and architects . —i Jo Ai. Fig. 142. — Externally Weighted Fig. 143.—Section of Spring or Pop . y-VALVE. SAFE! V VALVE. it is desirable that the safety-valve be made in such amanner that the engineer or attendant to the boiler cannotmanipulate it at pleasure so as to maintain a higher pressureon the boiler than prescribed. Serious accidents have been caused by excessive weightingof the safety-valve through ignorance or carelessness on thepart of the attendants, and for this reason a class of valvesshould be selected which canno

RM2AMXP02–Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . either of castiron or steel, depending upon the size and conditions. Sis the safety valve. These valves are entered into thecap and the fitting is riveted over on the inside. Threebosses are provided for safety valves. Two of the valvesare frequently pop valves and the third one is providedwith a lever. They are usually set to blow off at slightlydifferent pressures and a little above working boiler pres-sure. The cap C is turned off on the bottom and isentered into the dome ring by a flange

RM2AWKGP5–Locomotive appliances . too suddenly andreduces the pressure too much, turn ring (B) down(further away from the valve disc), and if it does notpop enough, opening and closing only gradually,turn ring (B) up (nearer to the valve disc). Whenthe desired adjustment is obtained, secure the ring bymeans of the set-screw (Y); whenever set-screw (G) ischanged, the pop regulating ring must in most casesbe changed to suit. LOCOMOTIVE APPLIANCES. 47 To insure proper ivorking: Pop safety valves shouldbe attached immediately upon the boiler, or as close tosame as possible; otherwise the connecting pipeshou

RM2AJJ400–Canadian engineer . essure, the movement of thevalve with relation to its seat being measured by a mi-crometer caliper. The results of the tests are plotted in Figs 4 and 5. Asa result of these tests the muffled locomotive pop safetyvalve is now made as shown in Fig. 6. In an addendum to Prof. Millers paper, Mr. A. B.Carhart, of the Crosby Steam Gage & Valve Co., makessome general comments regarding pop safety valves. Quot-ing in part these remarks^ he says: Pop safety valves were invented about 60 years agoand about 30 years later were perfected in this country andwent into general use. Broad

RM2AJ852H–The Century dictionary and cyclopedia; a work of universal reference in all departments of knowledge, with a new atlas of the world .. . Pop.valve (.?» form of Safety-valve).a, valve-seat l>asc which screws in : 6,cup-shaped outlet; c, valve ; tj, coiled sprint;which presses valve to its seat; f, lever bywhith the .ivc can be opened at will:/;set-nut by which the pressure of the springis iiillu^Ied ; A, removable cap.. into the holler when a partial vacuum has been formed bythe condensation of the steam.— Lock-UP safety-valve,a safety-valve having the weighted lever or spring shut ina loc

S&S Sales and Leasing is a reputable company with the knowledge and experience you can trust when you are looking for a Used Locomotive for sale and Used Locomotive Parts for sale. We offer RTO, Rebuildable Cores, and Outright purchase on our inventory of locomotive components. Below is some of our inventory. Give us a call and let us help you find the locomotive or locomotive part you are looking for. Our inventory always includes Prime Movers, Main Generators, Auxiliary Generators, Wheel Sets, Traction Motors and many other vital component to keep your railroad moving! Call our professional staff today!

A safety valve is a valve mechanism for the automatic release of steam from the boiler of a steam locomotive, which helps prevent from a steam locomotive from exploding.

Safety valves were first used on steam locomotives during the industrial revolution in the late-1800"s. Early boilers without them were prone to accidental explosion.

Vacuum safety valves (or combined pressure/vacuum safety valves) are used to prevent a tank from collapsing while emptying it or when cold rinse water is used after hot water.

The calculation method is not defined in any normal temperature when sizing a vacuum safety valve, particularly in the hot/cold water scenario, but some manufacturers have developed simulations to do so.

Conrader safety valves are designed to protect unfired pressure vessels and systems from over pressure in compressed air and gas applications. The soft seat safety valve (SRV-Series) has an elastomer seal. All Conrader safety valves are designed, manufactured, and certified under our ISO 9001 quality control system to meet the requirements of ASME Boiler and Pressure Vessel Code Section VIII Division 1 and are registered for use in Canada (CRN). Conrader safety valves are also available with the “CE” mark to meet the requirements of the Pressure Equipment Directive of the European Union.