firematic safety valve quotation

Fusible Fire Safety Valves are designed to reduce fire damage by shutting off the flow of oil from the oil tank in the event of a fire. They are required by code in residential oil heating installations in conformance with NFPA 31.All valves are embossed with an arrow indicating the direction of oil flow

R.W. Beckett’s burner controls were created with customer satisfaction and safety in mind. Our entire suite of burner controls utilizes the most current technology to safely control the combustion process.

• Fusible Fire Safety Valves are designed to reduce fire damage by shutting off the flow of oil from the oil tank in the event of a fire. These valves conform to UL/ULC 842 and are listed in the US and Canada. They are required by code in residential oil heating installations in conformance with NFPA 31.

• All valves are embossed with the direction of oil flow and include unique part number identification ring or each valve. The seal stem uses a double seal washer/ o-ring system with high grade Viton® equivalent materials suitable for No. 2 fuel oil, Kerosene and up to 20% Biodiesel blend.

In our oil safety valve photo at page top the OSV is in the OPEN position - the telltale indicator is that the screw is visible protruding up through the top of the silver-gray valve handle.

Fusible-link oil line valves such as the Fire-o-Matic valve work opposite from usual plumbing valves - that is, internally, because of the "reverse-threaded" valve stem, these oil line control and safety valves seem to operate backwards from what you"d expect.

To Open the OSV - let oil flow: turn the oil line valve counter-clockwise (left to right - in the direction of my finger to OPEN heating oil fuel flow. The threadsOn this part are cut opposite from usual plumbing shutoff valves. As you turn the valve handwheel in this direction the threaded valve stem will protrude upwards through the rotating knob. Oil will flow when the valve is open. In my photo the valve was about half-way open.

When the valve stem protrudes fully up through the turn-knob as far as possible you have compressed an internal spring inside the valve, and the valve is open to let oil flow. The handwheel actually feels "tighter" (as you are compressing the spring) and the handwheel moves down against the valve body as the valve opens.

To Close the OSV - stop oil flow: rn the Firematic type OSV clockwise (right to left) to close the valve and stop oil flow. As you turn the valve handwheel or knob in this direction (opposite to the direction my finger is pointing) the valve stem will disappear down into the valve body, pushed by its internal spring. You are closing the valve - oil will not flow.

When the turn knob is rotated so that the valve stem moves down through the knob until the stem end is flush with the knob top and the knob is loose, the valve is fully closed and oil will not flow.

Watch out: if the control valve on a heating oil line is not a fusible-link safety valve such as the Fire-o-Matic™, it will probably be an ordinary plumbing stop valve that works as all plumbing valves:clockwise closes those valves by moving the valve stem down and counter-clockwise to move the valvestem up opens them. Sometimes we find a common stop valve on the oil line at the oil tank and a fusible-link safety valve just at each oil burner.

An internal spring pressure, combined with a fusible link in the valve stem are what shut the oil line valve in event of a fire. In this design, when the valve is open to permit heating oil to flow it is also under spring tension. Because the valve includes a fusible link, in event of a fire the fusible link melts and the internal spring pushes the valve stem down, closing the valve and stopping oil flow.

As you turn the handle on the oil piping safety valve counter-clockwise you will feel increasing spring tension as you are opening the valve (lifting the stem out of the valve body) against the spring pressure.

Because of the use of "reverse" threads on the valve stem, when you turn the OSV knob counter-clockwise the underside of the control knob, remaining in contact with the surface of the valve body, causes the valve stem to move up (against pressure of the valve"s internal spring) until the threaded stem protrudes fully through the knob and you cannot turn the knob any more. In my photo the valve is about half-way open.

When the valve is fully open to permit fuel flow, the valve stem is "all the way out" of the valve body and the valve is being pushed-on by the internal spring. In this position the valve"s knob has been turned clockwise, all the way down against the body of the valve.

When this oil line fusible-link valve is completely open to heating oil fuel flow, the valve stem is screwed all the way up "out" of the valve body. As you turn the valve knob clockwise you"ll feel it moving against the internal valve spring pressure and you will see the valve stem moving up and out through the center of the oil valve knob.

When the oil safety valve handle is screwed clockwise (right to left) so that the threaded rod has disappeared fully down into the valve body the valve handle will become loose and the valve internal components will be in the closed position - heating oil fuel will not flow.

Because of the use of "reverse threads" on the valve stem, when you turn the OSV knob clockwise , as the knob itself remains in contact with the valve body, the spring-loaded valve stem will move down into the valve body, closing off the oil flow.

As you turn the oil valve knob clockwise you will see the valve stem move back into the valve body and you will feel the spring tension on the device lessen.

For the last few counter-clockwise turns on the valve stem/screw you should feel a complete release of tension of the spring mentioned just above and if you keep turning the valve knob counter-clockwise it will unscrew and come off. Don"t panic if this happens. The threaded portion of the valve stem protrudes up through the valve body and you can simply screw the knob back on.

In our OSV photos below, the first photo (below left) shows the oil line safety valve in the OPEN positin - oil will flow when the threaded portion of the valve shaft extends fully up through the rotatable knob pointed to by my pencil.

In our heating oil line valve photo at above right the valve has been manually CLOSED - no oil will flow. The threaded valve stem has disappeared down into the valve body and has shut off the valve and oil flow.

Watch out: if (for example in case of a fire) the fusible link inside of an OSV has melted permitting the spring to close the valve, then from outside the valve may look as if it is in the open position - the threaded stem will still be poking out - but the valve has snapped and closed internally.

Put another way: if you turn the oil line valve until the handle begins to come off, the valve is in the CLOSED position. You will see that at this point you have removed all tension against the valve"s internal spring and the spring has pushed the valve shut or closed. The valve stem has moved into the valve body.

If you turn the valve against its spring tension the valve is in its OPEN position. You will see that in this position you have turned the valve against its spring tension - the spring tension is increased - and the valve is open. The valve stem has moved out of the valve body.

at OIL FILTERS on HEATING EQUIPMENT where during heating equipment oil filter servicing the valve is used to close and later open the oil line feeding the oil burner

Thanks so much; what a great way to remember which way to turn the fire-o-matic valve stem: NO STEM = NO OIL - if you don"t see the valve stem poking up through the knob then the valve has been closed.

This is such a helpful article ! Thank you . After reading it I"ve concluded - " no stem , no oil " so I just remember that as I gently turn the valve handle ;

Thanks! I kind of freaked out a bit after changing the filter wondering why when i opened the valve no oil was coming through. I thought I just turned my dollar saving filter changing exercise into an expensive service call....

Sorry forgot to add yes I have turned the valve completely counterclockwise all the way to the point it does move anymore and the stem is fully exposed. I"ve also turned the furnace on and bled the burner so it appears that there is absolutely oil going thru the lines when the furnace is calling.

I believe it is tank->supply line-> OSV -> in to filter -> out to the burner, then another line that appears to go out (which seems to me to be a 2 line?), no other valves in that setup that I saw.

My valve looks the same as this but when it is in the Open position it doesn"t seem that oil flows through on it"s own, but when I turn the boiler on and there is a call for oil it is definitely going through. I discovered this as I went to change the filter and wanted to open the valve to release any air that may have been in the line, but with the valve open no oil was flowing, only when the boiler is on and calls. Is there something special about how this has been setup that it would do this?

So....left to right is CLOCKWISE,,,,,right to left is COUNTERCLOCKWISE.....to CLOSE the valve you rotate counterclockwise and allow the inner spring to close the valve. To OPEN the valve you would rotate clockwise and provide a counterbalance to the spring.

Sometimes a valve is loosened so as to allow the valve spring to close the valve but the valve sticks. A technician might tap gently on the valve stem to be sure it"s fully CLOSED.

These oil valve turned in the opposite direction from that to which you are accustomed. It sounds as though you were turning off the oil flow to your burner. That"s why the burner goes off.

Counter-clockwise turning of the handwheel on an OSV feels as if you are "tightening" the valve and the valve stem moves "up" through the handwheel - fully CCW opens the valve and oil can flow. The valve stem is "reverse threaded" compared with normal plumbing valves.

I think you"ve got your open and closed backwards, you seem to say the same thing for both normal valves and firematic valves ( See under watch out Clock wise is open ccw is closed ?) Confusing. While under summary, you have it correct.

Watch out: if you break it off you"ll have a financially ruinous oil tank flood in your home so take great care. If some fool does snap off an oil valve and can"t otherwise shut off oil flowing from an above ground oil tank, for an emergency repair just bent and crimp the copper tubing to stop the oil flow.

You describe an irritating problem indeed. If the oil safety valve simply won"t close you"re at least lucky to continue to have heat. The solution is to use up oil in the tank, have its remains pumped out, then replace the valve.

- the line is cut near the oil tank (or near the oil burner where an OSV valve should be anyway) and a second new working valve is installed on the lines.

I suppose a very confident plumber with help from an assistant might try putting down a pan, trying to fix the valve while spilling oil, but given the trouble of cleaning up an oil spill that live approach makes me nervous.

Question: I have a fire-O-matic valve attached directly to the oil tank: it"s now open and the furnace is running fine. I would like to close the valve and replace the downstream filter element. But when I turn the handle in either direction the stem turns with the handle..

.in other words, I cannot close the valve. I"ve tried the tapping on the end of the stem approach mentioned in the stuck valve section, but to no avail.

"When the valve is fully open to permit fuel flow, the valve stem is "all the way out" of the valve body and the valve is being pushed-on by the internal spring. In this position the valve"s knob has been turned clockwise, all the way down against the body of the valve.

When this oil line fusible-link valve is completely open to heating oil fuel flow, the valve stem is screwed all the way up "out" of the valve body. As you turn the valve knob clockwise you"ll feel it moving against the internal valve spring pressure and you will see the valve stem moving up and out through the center of the oil valve knob."

In both of these paragraphs the use of the word clockwise should be replaced with the word Counter-clockwise. I know this is just a typo but it will be very confusing to someone who is not familiar with these valves. It"s hard enough for people to understand without adding typos to the mix. Other than this thank you for publishing an excellent article.

If you have a fusible link valve that doesn"t seem to turn off you might try tapping the exposed end of the valve stem. I have found a stuck, or slow to close OSV on a few rare occasions. A gentle tap, not hard enough to damage threads, loosens it after which I open and close the valve a few times to convince myself it now moves freely. A burr on the brass interior or more likely internal sludge or debris could be the culprit.

Because at the oil burner the OSV is likely to be used at least once a year during service, that"s a good opportunity to discover if the valve is not closing fully.

What is the difference among all these different kinds of valves used on oil piping and at the oil burner or oil tank: check valve, fusible link valve, fire-o-matic type valve, vacuum operated valves, quickstop valves, solenoid valves, and oil delay valves. It"s really confusing.

We agree that there are enough valves and enough similarity in their names that the controls used at oil tanks, on oil piping, and at the oil burner to manage the flow of oil can be confusing. Worse, valves that do different things and have different purposes may all be called "oil safety valves" in marketing and technical literature.

Don"t confuse the built-in check valve in the fuel unit with external check valves, fusible link oil safety valves, solenoid operated quick-stop oil valves, and their sisters, solenoid operated oil delay valves.

OIL LINE SAFETY VALVE TURN DIRECTION to OPEN or SHUT at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

[10] Firomatic Globe Type Oil Line Valves & Lever Type Fusible Link Control Valves:ISP Automation, Inc., 1035 Old Georges Road, North Brunswick, NJ 08902, Phone: 866-383-3481, FAX 866-383-3482, Email: support@ispautomation.com

[14] "The Oil Safety Valve (Service)", Charles Bursey, Sr., Fuel Oil News, February 2006 (Still trying to get the full article - October 2008 - DF) Charles W. Bursey Sr. can be reached at F.W. Webb Co. www.fwwebb.com/

[19] Thanks to reader Bernie Daraz for suggesting the need for clear photographs illustrating the OSV or oil line safety valve in the open and closed positions. Personal correspondence 2/15/2013.

Thanks to Rick Johnston for pointing out that the more likely cause of a fire safety valve in the return oil line is a burst seal on the fuel unit 4/6/2009

Thanks to reader T.R. for suggesting clarity on where oil safety valves should or should not be installed and for discussing the proper hook-up location for the Tigerloop and similar oil line prime protection & air removal devices. April 2011.

Looking to expand your knowledge of fusible link valves? Here is the right place, this post will approach you with everything you need to know about the fusible safety valves, what is fusible link valve, and what’s the purpose. how they work, where they work for. Before learning you can review part of our project pictures as the following.

Fusible link safety shutoff valves are designed to automatically shut off flammable gases or liquids, solvents, alcohol, toxic liquids, or any other potentially hazardous media when the ambient temperature reaches a set value. In the event of a fire, the fuse of the automatic thermal shut-off device will automatically separate when it reaches a preset value, and then drive the actuator of the valve to close the valve(FC/NO) or open the valve(FO/NC).

The fusible link valve has different temperature settings, which can be freely selected according to the actual situation of the project. Generally, the set temperature of the fuse ball valve should be greater than the ambient temperature by 30°C. It is an ideal choice in the import and export system of flammable storage tanks. In addition, the fuse valve can be reused by simply replacing the broken fuse online during use, thereby reducing the cost of use.

Fusible link valve also called fire fuse valve, high-Temperature fusible valve, emergency shut-off valve, safety shut-off valve, fusible link safety shutoff valves,fire safe ball valve with automatic thermal shut-off device, fire-safe ball valve with automatic thermal shut-off device, fire-safe butterfly valves with automatic thermal shut-off device, thermal electrical shutoff valves.

The methanol emergency shut-off valve is a mechanical automatic reset safety protection device that uses a fused alloy chip to lock the spring force. When the ambient temperature reaches 100°C, the alloy dissolves, and the spring force expands to push the spool to close quickly. Widely used in combustible gas/liquid storage tanks and mechanical equipment, applications such as gas stations, oil depots, storage tanks, natural gas, liquefied gas, coal gas, methanol, toluene, biogas, liquid ammonia, ammonia, and fire protection facilities.

Fire safety fusible link valve-the fire safety ball valve with automatic thermal shutdown device (Thermal Shut-Off Valves), also known as fire cut-off valve, fire fuse valve, high-temperature fuse valve, without a power supply or air source. It’s s a kind of fire safety fire protection, the device is designed to automatically close the valve in the event of a high temperature or fire. The product has high-quality ball valves with API 607 fire protection certification.

Step 3. Connect the outlet end of the valve to the tanker pipeline: use a wrench to clamp on the octagonal surface of the outlet end of the valve to keep it, otherwise, the shear ring will be broken. Use another wrench to tighten the tanker pipe to be connected.

Note: Do not wrap PTFE tape on the threads, but apply a small amount of gasoline-resistant thread sealant to the pipe head. In order to avoid screwing the valve body, do not over-tighten when tightening. The recommended torque is 180N.m. (The recommended torque for tightening the test thread is 52N.m)

The emergency shut-off valve fastening device must be able to withstand a torque greater than 900N.m applied to each valve, the shear ring must be on the same level as the surface of the connecting foundation, and the height difference between the upper and lower sides must not be greater than 13mm. The fusible link valve is a necessary part of the machine, the user needs to construct it according to the foundation drawing provided by the main engine factory of the submersible pump tanker and strictly controls the relevant dimensions.

The valve is damaged or closed due to fire or vibration. Check whether the valve body is in good condition. Even if it is slightly damaged, please replace it immediately. In any case, before the valve is put into service again, the entire top of the connection and the top sealing ring should be replaced, and the valve must be retested.

Thestorage tank fusible link valve is installed on the oil storage tank inlet and outlet pipelines. When the tanker collapses or catches fire accidents, it can automatically and quickly cut off the oil flow. When the storage tank’s ambient temperature reaches a certain value or the fire reaches a certain temperature, the fuse ring of the fusible link valve melts and the valve closes automatically. It does not require an electric/pneumatic actuator to drive the valve.

This kind of structure of the fire blocking valve has a simple structure, ingenious design, and reasonable layout. Its unique structure can automatically trigger a series of mechanism actions after the ambient temperature reaches a certain range, and rely on the mechanical energy (spring elastic potential energy) used as the power source to realize the closing operation of the valve, thereby realizing the purpose of automatically cutting off the medium delivery in a short time. Installing this kind of fire blocking valve on a storage tank containing a flammable and explosive flame-retardant barrier can automatically react in a short time and reduce the output of combustible media as much as possible, thereby contributing to fire control in the event of an accident. Therefore, it can be said that it has many advantages and is particularly suitable for popularization and application in this field, and its market prospect is very broad.

The oil tank fusible link valve is installed on the inlet and outlet pipelines of the flammable storage tank. When the ambient temperature reaches the set value or the fire reaches the set temperature, the fusible link valve can automatically and quickly cut off the valve that closes the pipeline medium. The fusible link valve does not require power or air supply, and it can be automatic close. fusible link ball valves for diesel fuel tank

Oil tank fusible valves are usually installed on the outlet and inlet of oil tanks or flammable liquid storage tanks. When the ambient temperature of the fusible link valve reaches the set temperature of the fuse link, the flux on the fuse link begins to melt and break, then the fusible link valve starts to drive the valve action under the action of the preload of the return spring, and to make the valve open or close, so as to open or cut off the medium in the valve and achieve fire prevention purposes. There is a fusible ring in the fusible link valve, when the ambient temperature reaches a certain value or the fire reaches a certain temperature, the valve fuse ring will fuse and the valve will automatically close. It does not require an electric/pneumatic actuator to drive the valve.

The fusible link valve of a diesel generator set includes a valve body and an actuator. The valve body and the actuator are fixed by a fixed bracket. The actuator includes a shaft, a fuse actuator, a manual(handwheel), an actuator protection cover, and a signal feedback device. The fuse valve can be reused as long as the broken fuse is replaced during use, thereby reducing the use cost.

Many diesel generator sets still generally use manual shut-off valves, and electric or pneumatic shut-off valves. However, the control methods of these valves prevent the operators from being able to close the valves quickly in emergencies during fires, explosions, and other accidents. Or the shut-off valve cannot be approached due to the harsh conditions at the accident site, so the function of the electric or pneumatic shut-off valve system is damaged. Or when the coil of the shut-off valve is accidentally charged, the automatic shut-off valve will open automatically, making it can’t to cut off the pipeline. Therefore, the leakage of flammable gas or liquid, solvent, methanol, toxic liquid, or any other potentially dangerous medium may cause a certain amount of personal injury to the person who performs the closing action or cause the failure to close the pipeline in time to further expand the accident.

When the customer received the fusible link valves, you can re-installation these valves refer to the below guide. Remove the 4 screws on top of the actuator.

If you are interested in more information about the fusible link fuel shut-off valve, fusible link valve Singapore, fusible link valve symbol, fusible link ball valve, fusible link ball valve, fusible link valve operation, and 2” fusible link oil safety valves, welcome to send your requirements to our email, marketing@cncontrolvalve.com or WhatsApp +86 185 1656 9221

Fusible link valves aren’t complicated as control valves, but it is so important due to their application, we make sure every valve has a fire-safe function, and the fusible link should be verified. THINKTANK supplies fusible link safety valves for many distributors, and they have no worries about the valve quality, delivery time, affordable costs, and reliable performance. Just feel free to contact us if you are working in this niche market, and we believe we can create more value together.