3x4 mission mud pump free sample

During the 1950’s the Mission” 1780 type “W” pumps were introduced to replace duplex pumps while creating the first low pressure mud system. The use of a high quality concentric type centrifugal pump allowed abrasive fluids to be mixed and transferred while reducing initial and maintenance costs for the drilling industry. The low-pressure mud system with Mission 1 780 Type “W” centrifugal pumps became the industry standard.

As well depths increased so did the need for heavier mud weights. When the mud weight began exceeding 14 ppg the need for a pump that could withstand greater horsepower loads arose. During the 1970’s Mission organized a design team that engineered the Mission Magnum. The Magnum was designed to have the same footprint, flange locations, and drive shaft diameter as the 1780 “W”. This allowed a 1780 to be replaced by a Magnum without any skid modifications. The Magnums were originally engineered with a 2-1/2″ shaft (3″ between the bearings), double row bearings with an engineered life of over 2 years at 200 HP, larger impellers and heavier frames. The Magnum allowed drilling contractors to upgrade their centrifugal pumps and mix heavier fluids.

The National Oilwell Varco” Mission centrifugal pump line has proven to be the best centrifugal design for handling abrasive mud. This pump line offers a broad selection of innovative features for a variety of routine, demanding, abrasive and corrosive applications. These pumps are designed for a wide range of flow rates, from a few gallons per minute to thousands of gallons per minute.

Each pump contains the finest materials, engineering and craftsmanship available in the industry. Described are like features of these pump lines and unique features are described on the following pages.

National Oilwell Varco utilizes unique design features developed for slurries. Three major differences from most pump designs include the concentric casing, wider impellers and increased re-circulation areas. Each feature contributes to reducing wear when handling abrasive fluids.

All of the pumps feature a concentric casing. This casing averages 37% thicker than conventional pump casings, and up to 50% thicker for the larger, mud pumping models. They are pressure rated at 1 .5 times the flange rating and are designed with a 1 /8″ erosion allowance. The concentric style casing has proven to offer the greatest pump life and reduced downtime. The walls of a concentric style casing are an equal distance from the impeller throughout the impeller circumference, which results in a smooth flow pattern. A volute style casing has a cutwater point that disturbs the fluid flow pattern creating an eddy. The concentric casing eliminates vibration, turbulence and aeration that is caused by the cutwater point in conventional volute pumps. It also reduces the high bearing loads and shaft deflection even at near shutoff flows.

The shaft is much larger in diameter than conventional pump shafts for heavy-duty performance, minimum deflection and increased operating life of the seal or packing. With a 2-1/2″ diameter at the seal area and 3″ diameter between the bearings these pumps can be direct connected or belt driven.

1 Corporate Headquarters 799 Parkwood Circle Drive Houston, Texas 7736 United States Phone: Toll-Free: Mailing Address P.O. Box 4638 Houston, Texas 772 United States Customer Service Production 675 South 57th West Avenue Tulsa, Oklahoma 743 United States Phone: Toll-Free: Fax: Drilling and Well Service 3 Windfern Houston, Texas 7764 United States Phone: Toll-Free: Fax: United States Colorado Denver Phone: Grand Junction Phone: Fax: Louisiana Houma Phone: Fax: New Iberia Phone: Toll-Free: Fax: Scott Phone: Toll-Free: Fax: Shreveport Phone: Fax: Oklahoma Oklahoma City Phone: Fax: Tulsa Phone: Toll-Free: Fax: Pennsylvania Washington Phone: Fax: Texas Alice Phone: Fax: Fort Worth Phone: Fax: Houston Windfern Road Phone: Toll-Free: Fax: Houston Telge Road Phone: 28 2 Fax: Houston St Mary"s Lane Phone: Fax: Kilgore Phone: Fax: International Argentina Buenos Aires Phone: Fax: Australia Brisbane, Queensland Phone: Brazil Macae, Rio de Janeiro Phone: hours: Fax: Canada Edmonton, Alberta Phone: Toll-Free: Fax: China Beijing Phone: Fax: Egypt Cairo Phone: Fax: Libya Tripoli Phone: , ext. 8 Fax: Russia Moscow Phone: Fax: Saudi Arabia Dammam Phone: Singapore Kwong Min Road Phone: Fax: Tempco Technominium Phone: Fax: United Arab Emirates Jebel Ali, Dubai Phone: Fax: United Kingdom Aberdeen Phone: Fax: Gateshead Phone: Fax: MISSION CENTRIFUGAL PUMPS Magnum, 25 Supreme, Magnum XP, Magnum Vor tex, Sandmaster Odessa Oregon Street Phone: Fax: Montrose Phone: Fax: Odessa W 2nd Street Phone: Fax: Odessa Mankins Avenue Phone: Fax: Wyoming Casper Phone: Fax: Venezuela Anaco Phone: Fax: Maracaibo Phone: Fax: National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user s risk and are the user s responsibility. All brands listed are trademarks of National Oilwell Varco. m i s s i o n o v. c o m O n e C o m p a n y... U n l i m i t e d S o l u t i o n s w w w. n o v. c o m / m i s s i o n 2 National Oilwell Varco Rev. E

2 The Evolution During the 95"s the Mission 78 type W pumps were introduced to replace duplex pumps while creating the first low pressure mud system. The use of a high quality concentric type centrifugal pump allowed abrasive fluids to be mixed and transferred while reducing initial and maintenance costs for the drilling industry. The low-pressure mud system with Mission 78 Type W centrifugal pumps became the industry standard. As well depths increased so did the need for heavier mud weights. When the mud weight began exceeding 4 ppg the need for a pump that could withstand greater horsepower loads arose. During the 97"s Mission organized a design team that engineered the Mission Magnum. The Magnum was designed to have the same footprint, flange locations, and drive shaft diameter as the 78 W. This allowed a 78 to be replaced by a Magnum without any skid modifications. The Magnums were originally engineered with a 2-/2" shaft (3" between the bearings), double row bearings with an engineered life of over 2 years at 2 HP, larger impellers and heavier frames. The Magnum allowed drilling contractors to upgrade their centrifugal pumps and mix heavier fluids. The National Oilwell Varco Mission centrifugal pump line has proven to be the best centrifugal design for handling abrasive mud. This pump line offers a broad selection of innovative features for a variety of routine, demanding, abrasive and corrosive applications. These pumps are designed for a wide range of flow rates, from a few gallons per minute to thousands of gallons per minute. NOV is dedicated to continual improvement of our product line and offering innovative solutions to service our customers. Included in this manual are quality NOV products that have been designed to meet your needs. The future is being defined and the solution is available from NOV. This catalog has been divided into eight major sections. Each section has been color coded for convenience. Mission Magnum and 25 Supreme Pumps Sandmaster, Vortex and Magnum XP Pumps Shear Pumps Pump Sizing Information Pump Performance Curves Dimensional Data Piping Recommendations Related Equipment Close Coupled Centrifugal Pumps Conversion Table The pictures, photographs, charts, diagrams, drawings, written comments and specifications contained herein are not to be construed as giving rise to any warranty on the part of Mission, a product of National Oilwell Varco. Mission makes no warranty, either expressed or implied, beyond that stipulated in the Mission Standard Terms and Conditions of Sale. i

3 Mission Magnum and 25 Supreme Pumps Features of the Magnum, 25 Supreme, and Sandmaster Pumps Each pump contains the finest materials, engineering and craftsmanship available in the industry. Described are like features of these pump lines and unique features are described on the following pages. National Oilwell Varco utilizes unique design features developed for slurries. Three major differences from most pump designs include the concentric casing, wider impellers and increased recirculation areas. Each feature contributes to reducing wear when handling abrasive fluids. Wider, Increased Re-circulation Area National Oilwell Varco"s impeller design has wider vanes at the tip which decreases the velocity of the fluid exiting the impeller. This eliminates the abrasive jetting effect that is present with narrow impellers. The distance between the impeller tip and the casing is greater resulting in an increased re-circulation area. Lower velocity rates and increased re-circulation areas allow the exiting fluid to blend with the re-circulating fluid reducing turbulence and wear. The entrance shape of the impeller vanes is more tangential to the circumference of the suction creating a smoother flow pattern. Smooth flow is crucial when handling abrasive fluids. Wide Tipped ANSI Style Concentric Casing Volute Casing Thicker, Stronger, Concentric Casing All of the pumps feature a concentric casing. This casing averages 37% thicker than conventional pump casings, and up to 5% thicker for the larger, mud pumping models. They are pressure rated at.5 times the flange rating and are designed with a /8" erosion allowance. The concentric style casing has proven to offer the greatest pump life and reduced downtime. The walls of a concentric style casing are an equal distance from the impeller throughout the impeller circumference, which results in a smooth flow pattern. A volute style casing has a cutwater point that disturbs the fluid flow pattern creating an eddy. The concentric casing eliminates vibration, turbulence and aeration that is caused by the cutwater point in conventional volute pumps. It also reduces the high bearing loads and shaft deflection even at near shutoff flows. Highest Quality Bearings Advanced front and rear bearing design reduces both radial and thrust loads. The outboard bearing is a duplex set of angular contact bearings with high thrust load capabilities and zero endplay. This bearing set features 24 large balls that are preloaded so that each bearing carries an equal load. National Oilwell Varco utilizes an inboard bearing that is a single row roller bearing with high radial load capabilities. This bearing was selected to replace the previously utilized double row bearing due to its engineered bearing life of over 2.2 times the L life of previously utilized double row ball bearings. Bearing Lubrication Options Oil or grease lubrication is available. Grease lubrication is the factory standard. Oil lubrication is recommended for pump speeds in excess of 24 RPM. Oil lubricated pumps must be maintained in a horizontal level position. Heavy-Duty Shaft The shaft is much larger in diameter than conventional pump shafts for heavy-duty performance, minimum deflection and increased operating life of the seal or packing. With a 2-/2" diameter at the seal area and 3 diameter between the bearings these pumps can be direct connected or belt driven. The shaft area under the packing is protected by a replaceable, hook type sleeve with one end free to expand with temperature variation. This sleeve can be replaced in the field without shaft removal. 2 3

4 Mechanical Seal Options A type I single tungsten carbide vs. tungsten carbide mechanical seal is standard. Tungsten carbide has proven itself as a highly abrasive resistant material with a Ph range of 7 to 4, depending on chemical composition. For applications with a lower Ph level the silicon carbide vs. silicon carbide mechanical seal is recommended with its Ph range from -4, depending on chemical composition. Both mechanical seals are lubricated by the fluid being transferred and require the pump to remain primed during operation. When the pump is subject to high temperature fluids, oil base muds with low aniline points, running dry or extremely abrasive fluids, the Olympia cartridge type double mechanical seal is the solution. Utilizing a barrier fluid between the two seals ensures the seal faces remain lubricated even when the pump is run dry. The fluid being transferred has virtually no effect on the seal since the barrier fluid is in contact with the seal faces. Custom mechanical seal options can be provided for specific applications. Stuffing Box with Dual Bolt Holes Olympia Double Mechanical Seal Versatile Stuffing Box Centrifugal Equipped with Olympia Seal An easily removable stuffing box allows these pumps to be customized to meet customer needs. The different options available are stuffing boxes to accommodate: Shaft packing Single mechanical seal Olympia Double mechanical seal with barrier fluid Specialized mechanical seals The packed box has a tapped opening to the lantern ring to allow grease lubrication or a flush line to be attached. Dual stuffing box bolts are positioned 8 degrees apart to hold the stuffing box in position during casing removal. When only one stuffing box bolt is used the stuffing box remains in position on one side while the other side moves with the casing, causing the casing to bind and make removal difficult. Casing Jack Bolts Type I Mechanical Seal Casing jack bolts are an added feature to the Magnum and 25 Supreme pump lines. Jack bolts allow the casing to be mechanically removed eliminating the need for pry bars or striking the casing during maintenance. This feature simplifies maintenance and eliminates damage to the casing and pedestal during disassembly. Solid Frame Base The solid frame base strengthens the pump and eliminates broken feet that occur with pumps equipped with a split base. Fluid End Materials Various fluid end materials are available that allow these pumps to be utilized for a variety of applications. Standard pumps are supplied with a hard iron fluid end but can be upgraded to stainless steel, aluminum bronze, Magnachrome, or Supreme Hard. These materials are available for select sizes and can be purchased as a complete or fitted fluid end. Magnachome material is a proprietary material exclusive to National Oilwell Varco and is formulated specifically for its high abrasion resistant qualities. Magnachrome is approximately 3 times harder than Hard Iron. The Supreme Hard material is approximately 2 times harder than Hard Iron. Technical Support and Parts Availability With locations and distributors throughout the world, National Oilwell Varco ensures our customers can obtain technical assistance and pump parts in a timely manner. Engineering support, literature and electronic manuals are available to help properly size and service equipment. Superior Packaging and Labeling All parts are properly packaged to protect the equipment during shipping. The material is clearly marked to ensure our customers are getting OEM manufactured parts and allow packers and service hands to confirm they have the correct equipment without having to open the packaging and expose the equipment to external elements. Magnum and 25 Supreme National Oilwell Varco is dedicated to providing a full line of products to meet the needs of our customers. Realizing customer needs and priorities may differ, National Oilwell Varco provides two separate pump lines with like operating and dimensional characteristics. Following are the unique features of the Magnum and 25 Supreme. Magnum* Open impeller design that lowers axial thrust loads and is equipped with an impeller retention bolt to ensure the pump is not damaged if run in reverse. ( retention bolt is not available on 3x2x3 models.) Lip seals and exclusion seal to retain lubricants and protect bearings from external contamination Fluid end parts available with Magnachrome corrosive and abrasive resistant material. Magnachrome impellers have a 4 Brinell hardness and Magnachrome casings and stuffing boxes feature a 6 Brinell hardness. One piece casing * The Magnum and 25 Supreme are available through select distributors. 25 Supreme* Semi Open impeller design that reduces the amount of solids that enter the stuffing box extending the life of the mechanical seal or packing and the life of the stuffing box. (Available on 5x4x4 x8x4 models.) Labyrinth seals to offer maximum bearing protection from external contamination. Labyrinth seals rotate with the shaft eliminating shaft wear. Fluid end parts available with Supreme Hard material that has a 4 Brinell hardness. The standard impeller, casing wear pad and stuffing box are Ductile Iron to ensure even wear characteristics. Casing provided with replaceable casing wear pad on 4x3x3 x8x4 models. 4 5

5 Magnum Features Thick, strong concentric casing provides extended Lip and exclusion seals for bearing protection life over conventional volute designs. The 2 Optional flanged bearing housing available for concentric design minimizes turbulence and hydraulic drive abrasive wear. 3 External adjustment of impeller clearance extends 2 Wide open-vane impeller increases flow and pump performance life. creates lower axial thrust for improved bearing life. 4 Large heavy-duty shaft reduces deflection for longer 3 Casing gasket recessed for protection. life of packing and mechanical seals. 4 Replaceable stuffing-box cover with dual stuffing 5 Solid base offering rigidity and strength box bolts 6 Casing jack bolts simplify casing removal 5 Optional stuffing boxes available for single and 7 Easily accessible front access drain, when requested. double mechanical seal applications and can be 8 Back vanes reduce collection of solids at stuffing box configured for flush lines. and reduce box pressure. 6 Long-life no-adjustment mechanical seal available 9 Smooth impeller eye for minimum turbulence and for near zero leakage. higher efficiency. 7 Replaceable shaft sleeve prevents shaft wear. 2 Anti-loosening impeller lock bolt to eliminate pump 8 Single row roller bearings for increased bearing life. damage in case of improper motor hook-up. 9 Oil lubrication for bearings available upon request 2 Full pipe diameter entrance for minimum turbulence and recommended for pump speeds in excess of and maximum efficiency. 24 RPM. Duplex angular contact bearings eliminate shaft end play and increases bearing and seal life. 25 Supreme Features Thick, strong concentric casing with replaceable Duplex angular contact bearings eliminate shaft end casing wear pad provides extended life over play and increases bearing and seal life. conventional volute designs. The concentric design Labyrinth seals for maximum bearing protection are minimizes turbulence and abrasive wear. The wear standard. Lip seals are recommended for oil-lubricated pad allows the casing to be repaired at a lower cost pumps. than replacing the entire casing. 2 Optional flanged bearing housing available for 2 Wide semi open impeller creates lower axial thrust hydraulic drive. for improved bearing life. The semi open design 3 External adjustment of impeller clearance extends reduces the concentration of solids behind the pump performance life. impeller extending the life of the mechanical seal or 4 Large heavy-duty shaft reduces deflection for longer packing and stuffing box. life of packing and mechanical seals 3 Casing gasket recessed for protection. 5 Solid base offering rigidity and strength 4 Replaceable stuffing-box cover with dual stuffing 6 Casing jack bolts simplify casing removal box bolts 7 Replaceable casing wear pad. 5 Optional stuffing-boxes available for single and 8 Easy accessible front access drain. double mechanical seal applications and can be 9 Back vanes reduce collection of solids at stuffing box configured for flush lines. and reduce box pressure. 6 Long-life no-adjustment mechanical seal available 2 Smooth impeller eye for minimum turbulence and for near zero leakage. higher efficiency. 7 Replaceable shaft sleeve prevents shaft wear. 2 Full pipe diameter entrance for minimum turbulence 8 Single row roller bearings for increased bearing life. and maximum efficiency. 9 Oil lubrication for bearings available upon request and recommended for pump speeds in excess of 24 RPM. See pages 27-4 for pump performance curves. See page 46 for dimensional data. See pages 27-4 for pump performance curves. See page 46 for dimensional data. 6 7

6 Magnum Centrifugal Magnum Parts List Item Qty Catalog Number Part # Description Material * See Below See Below Casing Hard Iron A Gasket, Casing Vellumoid B Nut, Casing Stl C Stud, Casing Stl D Plug, Casing Drain Stl E Plug, Flush Line Iron 2* See Below See Below Hard Iron 2A Seal, Viton 2B Washer, Stl 2C Bolt, Lock Stl 3*# Stuffing box, Mech. Seal Hard Iron 3*& Stuffing Box, Packed Hard Iron 3A Bolt, Stuffing box Stl 3B& Grease Fitting Stl A Gland Assy., Packing Bronze 5A# Seal, Mechanical Tungsten Carbide 5A~ 254-4M-B 6675 Packing, Shaft Graphite/Acrylic 6 2 B37A Bolt Assy, Gland Stl Shaft AISI 44 7A# Sleeve, Shaft (M.S. Pump) 46SS 7A& 263-2G-7A 6428 Sleeve, Shaft (Pack Pump) 46SS/Ceramic 7B Key, Shaft 46ss 7C Seal, Shaft Sleeve Viton A 6468 Deflector Assembly Bronze Frame, Grease Lubricated Cast Iron 9A! Plug, Oil Drain Iron 9B! Plug, Oil Fill Iron 9C Plug, Frame Drain Iron 9D Breather Stl 9E Oiler Assembly 9F! A Dip Stick Stl 9G H Bolt, Casing Jack Stl A Cover, Inboard Bearing Iron B Gasket, I.B. Brg. Cover Vegetable Fiber C Oil Seal, I.B. Brg. Cover Buna-n D Bolt, I.B. Brg. Cover Stl Item Qty Catalog Number Part # Description Material E Nut, I.B. Brg. Cover Stl F Exclusion Seal, I.B. Brg. Cvr. Buna-n G Grease Fitting Stl H Grease Fitting Stl N/A 669 Bearing, Inboard Vendor Housing, O.B. Bearing Iron 2A Seal, O.B. Brg Housing Buna-n 2B Bolts, O.B. Brg. Housing Stl 2C Nut, O.B. Brg. Housing Jam Stl Cover, O.B. Bearing Iron 3A Grease Zerk, O.B. Brg. Cvr. Stl 3B O-ring, O.B. Bearing Cover Buna-n 3C Oil Seal, O.B. Brg. Cover Buna-n 3D Bolt, O.B. Brg. Cover Stl 4 2 N/A Bearing, O.B. (2 Req"d) Vendor 4A Lockwasher, O.B. Bearing Stl 4B Lucknut, O.B. Bearing Stl Casings - Includes Studs, Nuts and Gasket * A Casing, 3x2x3 Hard Iron * A 6492 Casing, 4x3x3 Hard Iron * A Casing, 5x4x4 Hard Iron * A Casing, 6x5x Hard Iron * A 6465 Casing, 6x5x4 Hard Iron * A Casing, 8x6x Hard Iron * 97--3A 6438 Casing, 8x6x4 Hard Iron * A Casing, x8x4 Hard Iron s 2* 924-XX-3 Varies, 3x2x3 Hard Iron 2* 926-XX-3 Varies, 4x3x3 Hard Iron 2* 9224-XX-3 Varies, 5x4x4 Hard Iron 2* 92-XX-3 Varies, 6x5x Hard Iron 2* 92-XX-3 Varies, 6x5x4 Hard Iron 2* 92-XX-3 Varies, 8x6x Hard Iron 2* 96-A-3 Varies, 8x6x4 Hard Iron 2* 2867-XX-3 Varies, x8x4 Hard Iron XX - Code - First X equals diameter of impeller in inches minus 4. Therefore " = 6, 9"= 5,8"=4, etc 4" use letter A. Second X equals fractional data in /8"s. Therefore /8" =, /4" = 2, /2" = 4, etc Thus a.5" impeller is coded as 64, a 2" impeller is coded as 8, a 3.25" impeller is coded as 92 etc. Notes: * - Casings, s and Stuffing Boxes are also available as Stainless Steel, Aluminum Bronze or Magnachrome - See local dealer for Part Numbers. # - Used for pumps equipped with mechanical seal only. & - Used for pumps equipped with packing only.! - Used for oil lubricated pumps only. ~ - Packing available in various materials - standard material shown 8 9

7 25 Supreme 25 Supreme Parts List Item Qty Catalog Number Part # Description Material * See Below See Below Casing, Includes thru E Hard Iron A Gasket, Casing Vellumoid B H Nut, Casing Stainless Steel C 2 H Stud, Casing Stl D* See Below See Below Wear Pad, Includes stds, nuts, & gskt E 855-2H Plug, Casing Drain Stl 2* See Below See Below Hard Iron 2A H Seal, Viton 3*# H H Stuffing box, Mech. Seal Ductile Hard Iron 3*& H H Stuffing Box, Packed Ductile Hard Iron 3A 2 H Bolt, Stuffing box Stl 3B& 9368-H 9368-H Grease Fitting Stl 4 2 H2622A 2622H Gland Assy., Packing Stainless Steel 5A# H2245-A 2245K Seal, Mechanical Tungsten Carbide 5B~ OB Packing, Shaft BOLT,GLAND Stl 7 H Shaft AISI 44 7A# H263-2A Sleeve, Shaft (M.S. Pump) 46SS 7A& H263-2G-7A Sleeve, Shaft (Pack Pump) 46SS/Ceramic 7B H Key, Shaft 46ss 7C Seal, Shaft Sleeve Viton A 6468 Deflector Assembly Bronze 9 H H Frame, Grease Lubricated Cast Iron 9A! H Plug, Oil Drain Iron 9B! 855-2H Plug, Oil Iron 9C Plug, Frame Drain Iron 9D H Breather Stl 9E H H Plug, Oil Fill Plastic 9F! H H Dip Stick Stl 9G 2 H H Bolt, Casing Jack Stl A H H Cover, Inboard Bearing Iron B H Gasket, I.B. Brg. Cover Vegetable Fiber C H H Labyrinth Seal, IB Brg Cvr Buna-n D 2 H H Bolt, I.B. Brg. Cover Stl E 6633 Grease Fitting Stl N/A 669 Bearing, Inboard Vendor Item Qty Catalog Number Part # Description Material 2A H Seal, O.B. Brg Housing Buna-n 2B 4 H Bolts, O.B. Brg. Housing Stl 2C 2 H Nut, O.B. Brg. Housing Jam Stl 3 H267A 267H Cover, O.B. Bearing Ductile Iron 3A 662 Grease Zerk, O.B. Brg. Cvr. Stl 3B H O-ring, O.B. Bearing Cover Buna-n 3C H H Labyrinth Seal, O.B. Brg. Cvr. Buna-n 3D 2 H Bolt, O.B. Brg. Cover Stainless Steel 4 2 H266-S Bearing, O.B. (2 Req"d) Vendor 4A H Lockwasher, O.B. Bearing Stl 4B H Lucknut, O.B. Bearing Stl Casings - Includes Studs, Nuts and& Gasket * H923--3A 923AH Casing, 3x2x3 Hard Iron * H925--3A 925AH Casing, 4x3x3,w/ wear pad Hard Iron * H A 9222AH Casing, 5x4x4,w/ wear pad Hard Iron * H922--3A 922AH Casing, 6x5x,w/ wear pad Hard Iron * H923--3A 923AH Casing, 6x5x4,w/ wear pad Hard Iron * H A 9763AH Casing, 8x6x,w/ wear pad Hard Iron * H97--3A 97AH Casing, 8x6x4,w/ wear pad Hard Iron * H A 2937AH Casing, x8x4,w/ wear pad Hard Iron s and Casing Wear Pads 2* H924-XX-3 Varies, 3x2x3 Open Ductile Hard Iron 2* H926-XX-3 Varies, 4x3x3 Open Ductile Hard Iron 2* H2523-XX-3 Varies, 5x4x4 Semi Open Ductile Hard Iron 2* H2524-XX-3 Varies, 6x5x Semi Open Ductile Hard Iron 2* H2524-XX-3 Varies, 6x5x4 Semi Open Ductile Hard Iron 2* H2524-XX-3 Varies, 8x6x Semi Open Ductile Hard Iron 2* H2525-A-3 Varies, 8x6x4 Semi Open Ductile Hard Iron 2* H2526-XX-3 Varies, x8x4 Semi Open Ductile Hard Iron E H25--3A 25-37AH Wear Pad, 4X3X3 Casing Ductile Hard Iron E H252--3A AH Wear Pad, 5X4X4 Casing Ductile Hard Iron E H253--3A AH Wear Pad, 6X5X Casing Ductile Hard Iron E H254--3A AH Wear Pad, 6X5X4 Casing Ductile Hard Iron E H255--3A AH Wear Pad, 8X6X Casing Ductile Hard Iron E H256--3A AH Wear Pad, 8X6X4 Casing Ductile Hard Iron E H A AH Wear Pad, X8X4 Casing Ductile Hard Iron XX - Imp. Code - First X equals diameter of impeller in inches minus 4. Therefore " = 6, 9"= 5, 8"=4, etc 4" use letter A. Second X equals frational data in /8"s. Therefore /8" =, /4" = 2, /2" = 4, etc Thus a.5" impeller is coded as 64 Notes: * - Casings, Imp. & Stuff Boxes are available as Supreme Hard or Aluminum Bronze # - Used for pumps equipped with mechanical seal only. & - Used for pumps equipped with packing only.! - Used for oil lubricated pumps only. ~ - Packing available in various materials - standard material shown

8 Parts Specific by Pump Size Item # B 9A Casing Assy. H.I. () Base Includes Suction H.I. () Pump Companion studs, nuts, Suction Suction Suction Flange (P/N varies by Base Base Size Flange () and gasket Elbow () Flange Nut Flange Stud Gaskets (2) diameter) Flange Nut Flange Stud 3x2x x3x x4x x5x x5x x6x x6x x8x Vertical Magnum Parts List Parts Common to all Vertical Magnums Item Quantity Part Number Description Pump-Base Mechanical Seal Casing studs Casing Nuts Casing Gasket Mech Seal Stuffing Box Retention Bolt 2 Contact Factory Electric Motor Packing Gland Back-up Packing 24 and Gland Bolts O-ring Set Screw Casing Drain plug 29 * Anti-Spin Bolt Washer Not Shown Stuffing Box Bolts Parts Specific by Motor Frame Size Item # Not Shown Shaft Adapter Sleeve Shaft Sleeve Motor Motor Frame (444 Motor Motor Frame Motor Shaft Shim Set Screw Adapter Adapter and 445 Frame Adapter () Sleeve () () (6) Studs (4) Nuts (4) only) 25JP JP JP JP JP JP JP JP JP TCZ TCZ TCZ * Contact your National Oilwell Varco representative. * Contact your National Oilwell Varco representative. 2 3

9 Sandmaster, Vortex and Magnum XP Pumps Versatile Drive and Mounting Options Unitization services and options compliment the centrifugal pump line. National Oilwell Varco centrifugal pumps are available as horizontal electric, vertical electric, close coupled electric, horizontal diesel, overhead belt, side belt and hydraulic driven pumping units. The horizontal electric units are fabricated on a steel channel base engineered to provide proper alignment with minimal shimming requirements. Diesel driven units are provided with full instrumentation, batteries and fuel tanks. Side overhead belt units feature a small footprint and allow the pump to be operated at the lowest possible speed, which extends pump life significantly. Vertical units require the least amount of deck space. Close coupled horizontal models require the least amount of cubic space and eliminate pump and driver alignment concerns. Hydraulic adapters are available with SAE size C and D adapters. SANDMASTER PUMPS The compact and adaptable Sandmaster centrifugal pump includes virtually all of the features of the Magnum I. Sandmasters are more compact in design and can be adapted for hydraulic motor drive. These features make Sandmaster pumps ideal for use in applications such as oilfield frac trucks as well as blending and pump charging for water well drilling applications. All parts for these pumps are identical to the Magnum except for the frame and shaft. The frame and shaft have been shortened 4 to reduce the length of the pump. When space is a premium and prime mover options are limited, the Sandmaster is the pump of choice. Common applications include: Cement Charge Pump Blender Waterwell Drilling Other Mobile uses Available Sizes: 3x2x3 6x5x4 4x3x3 8x6x 5x4x4 8x6x4 6x5x x8x4 Grease lubricated pumps can be mounted vertically or horizontally and upright or upside down. The casing can be rotated to any angle but the discharge should always be oriented above the suction to prevent air pockets from forming. Custom unitization services are available. See pages 27-4 for pump performance curves. See page 47 for dimensional data. 4 5

10 VORTEX PUMPS The VORTEX centrifugal pump offers proven performance of the MAGNUM I adapted with a concentric vortex casing. The VORTEX also features identically sized suction and discharge flanges, and a high performance vortex designed impeller. The vortex impeller produces a smooth hydraulic whirlpool of fluid in front of the impeller creating a vacuum. Fluid circulates through the casing with minimal fluid passing through the impeller. This smooth action increases fluid velocity and pressure while minimizing turbulence resulting in reduced particle degradation. Solids smaller than the discharge flow easily, without clogging. The vortex design eliminates the eye of the impeller reducing the possibility of vapor lock; making it an excellent selection for high suction lift applications where net positive suction head is low. Other benefits of the vortex design include lower radial loads, decreased shaft deflection and increased bearing life. The vortex is designed to pump continuously. Even when the suction runs dry the vortex pump can re-prime without vapor locking and transfer fluid once positive suction feed has been restored. Common applications include: Pulp and paper Primary metals Municipal sewage treatment Chemical process industry Available Sizes: 3x3x4 4x4x4 6x6x4 MAGNUM XP PUMPS The MAGNUM XP is ideally suited for pumping high volumes of heavy slurries that are abrasive, corrosive, or just plain tough to pump. The MAGNUM XP 8x6x8, 2xx23 and 4x2x22 can deliver flow rates up to 75 GPM and head pressures up to 54 feet. The compact overall dimensions of the MAGNUM XP make it an excellent choice for high volume mobile and stationary applications where a small footprint is critical. The MAGNUM XP is designed for continuous operation with minimal maintenance. The low stuffing box pressure and extra-heavy shaft design are engineered to provide maximum seal life. The unique casing flow divider on the 2xx23 and 4x2x22 cuts the radial load in half, doubling bearing life. The heavy-duty bearings are permanently lubricated to minimize maintenance. Common applications include: Sand slurry Supply boat mud transfer Slag Fly ash Bottom ash Dredge tailings Food processing Blending Paper pulp processing Waste slurries Sewage Fluid supercharging Spent liquor Nickel shot Copper, bauxite, and quarry slurries Lead and zinc ore and tailings Available Sizes: 8X6X8 2xx23 4x2x22 See pages 4-42 for pump performance curves. See page 5 for dimensional data. See pages for pump performance curves. See page 48 for dimensional data. 6 7

11 Shear Pumps Magnum XP Parts List Item # Description Qty. Catalog Number Part Number Casing, 4X2X A Casing, 2xx A 662 Casing, 8x6x A Nut, Casing Stud, Casing (4 X 2 and 2 X ) Stud, Casing ( 8 X 6 ) Stud, Casing ( 8 X 6 ) Gasket, Casing (4x2x22) Gasket, Casing (2xx23) Gasket, Casing (8x6x8) Cover, Front (4x2x22) Cover, Front (2xx23) Cover, Front (8x6x8) , 4x2 Clockwise Rot. 22" 2424-X-HS 66253, 2x Clockwise Rot. 23" 25-Y , 8x6 Clockwise Rot. 8" T Seal, Nose Key, Nose, ( Hex Design) L Nose, (Two Flat Design) L Nose, (2 Flat Ion Nitride) L Screw, Set Jam Nut L Seal, Mechanical Seal (Crane Type) Stuffing Box, Mech. Seal (4 X 2) Stuffing Box, Mech. Seal (2 X ) Stuffing Box, Mech. Seal (8 X 6) Bolt, Stuffing Box Sleeve, Shaft BZ Seal, Sleeve Slinger Seal, Slinger P Oil Seal, Inboard Bearing Bearing, Inboard Frame 4 X Frame 2 X Frame 8 X Housing, Bearing Seal, Bearing Housing Item # Description Qty. Catalog Number Part Number 25 Bearing, Outboard ( 4 X 2 ) Bearing, Outboard(2 X and 8 X 6) Seal, Bearing Cover Lock Washer Lock Nut, Bearing Oil Seal, Bearing Cover Drive Screws Nameplate Shaft Key, Coupling Cover, Bearing Bolts, Bearing Cover Washer, Bearing Cover L Nuts, Bearing Housing Bolt, Bearing Housing Washer, Flat L Bolt, Packing Gland Gland, Packing Half Packing Set K Screw, Cap Plug, Grease Breather Plug, Fitting Plug, Pipe Plug, Pipe Tag, Mechanical Seal Packed Split-Box and Wearplate 47 Wearplate, Split Box XX Packing Set K Nut and Washer Assembly Bolt, Split-Box /2-3x4 lg Gr 5 5 Stuffing Box, Split Latern Ring Half Fitting, Grease Screw, Cap Auxiliary Tools 55 Tool, Nose and Nut Tool, Nose (HEX) Standard Hex Socket 56 Tool, Removal Tool, Shaft Holder TurboShear System National Oilwell Varco"s TurboShear System reduces the cost of mixing polymers and clays while improving mud properties. Shearing the polymers eliminates fish eyes and prevents polymer chaining (long strings), which cannot pass through shaker screens. Pre-hydrating clays improves viscosity per pound of clay, reduces water loss and improves filter cake properties. Additionally, the TurboShear System can be used to dissolve salt and mix oil-base fluids. Adding clays directly to an active mud system does not result in mud properties equal to those achieved with prehydration in a high shear system. When clays are added to the active mud system, high shear cannot be applied to the clays since degradation of drill solids and barite will occur. Clay that has not been properly hydrated when added to an active mud system often continues to hydrate for several days, during which the viscosity level increases. Additional water to reduce viscosity may require disposing of excess mud, which increases costs. Hydrating clays and shearing polymers in a separate compartment, prior to introduction to the active mud system, ensure quality mud properties. The TurboShear pump is available as a belt-driven or diesel-driven package including a hopper, mud gun and transfer line orifice plate. A complete system, including skid, tanks and piping, is also available The TurboShear System utilizes the following six methods for shearing:. Fluid enters pump through the inlet ports and impacts the shear plate. 2. Fluid passes through the teeth of the shear plate, which is turning at 22 RPM. 3. Fifty percent of the fluid is re-circulated through the four nozzle scoops and is jetted through 44 nozzles against the shear plate and incoming fluid. 4. Liquid shear occurs at more than 5 feet per minute. The tip speed of the turbine is more than 7 feet per minute, causing a liquid shear to occur in addition to the mechanical shear. 5. Shearing occurs as the fluid is jetted into the hydration tank through the mud gun at more than 6 feet per minute. 6. The product is sheared between the fluid leaving the nozzle and the venturi throat of the hopper. Available Sizes: 6 x 5 8 x 6 8 9

12 Pump Sizing Information Supreme Shear Pump The industrial industry discovered that liquid shear occurs between solids when the fluid speed exceeds 5, feet per minute. Therefore, an impeller size and speed that produces an impeller tip speed over 5, feet per minute causes liquid shear. When engineering the impeller vane curve, it was designed so a solid particle will move straight out with minimum contact with the impeller (at the pump"s best efficiency point). When shearing solids is desired it is beneficial to reverse this engineering practice. Allowing the solids to drag across the impeller vane causes a mechanical shear. To accomplish this, the pump output volume can be restricted to half its best efficiency point. This makes the solids drag on the face of the impeller vane. The Supreme Shear pump features Tungsten Carbide chips adhered to the face of the impeller to give a rough surface that assists in the degradation of solids. By controlling the impeller size and speed National Oilwell Varco can provide a Supreme Shear pump that incorporates both the liquid and mechanical shear techniques to reduce the size of solids. The most common use for this application is shearing drill cuttings and injecting them behind the intermediate casing. Testing has shown that the drill cuttings can be reduced to 5 micron by using the Supreme Shear pump. Operating the pump at designed levels and adding solids until the liquid has a range of -3 ppg proves to be most effective. Operating less than ppg does not provide enough solids for the liquid shear to occur. Operating greater than 3 ppg results in the material becoming too viscous. HOW TO SELECT YOUR PUMP. Before you size the pump, you need to know:. The Pump Speed This depends on what kind of drive you put on the pump; 35, 75 or 5 RPM for 6 Hz motors and 3, 5 or RPM for 5 Hz motors. Variable speed curves are provided for diesel, belt drive and hydraulic motors..2 Total Head Required The total head (TH) required is the summation of vertical elevation (He) and friction head (Hf) plus the head required at the end of the piping. TH=He + Hf + head required at of the end of piping. Subtract the suction head when the source of supply is above the pump. To calculate Friction Head loss SEE PAGE Flow Rate The flow requirement in GPM or cubic meters per hour..4 The specific gravity of the fluid or the weight of the fluid to be pumped such as the mud weight in ppg. 2. After obtaining the above information. 2. Find the required flow rate on the bottom or top scale and draw a straight line up or down. 2.2 Find the total head at the left or right hand scale and draw a straight line to the right or left. 2.3 Locate the intersection of the above two lines and pick the nearest impeller size. s are available in /4" increments. Also a set of horsepower lines gives you the horsepower requirement for pumping water (It is best to choose a motor size larger than the minimum required). If you pump fluid other than water, you have to adjust the required HP (kw) by multiplying the specific gravity to the HP (kw) rating based on water. 3. NPSH Net positive suction head is the useful pressure existing at the suction flange of the pump to push water into the impeller vanes. It is measured in feet (meters) of head. It is called NPSH Available (NPSHa). NPSH Required (NPSHr) is read from the pump curve at the designed pump impeller, RPM, and flow rate. NPSH on the curve is the lowest NPSH that will prevent the formation of vapor bubbles which cause cavitation. Most customers are not concerned about NPSH problems. However over 5% of all rigs do have NPSH problems. These problems are due in part to high mud temperatures and poor suction design. You should check your net positive suction head (NPSH). NPSHa Equation - Flooded Suction Systems only: NPSHa = Ha + Hst - Hvp - Hfs NPSHa Equation - Suction Lift Systems only: NPSHa = Ha - Hst - Hvp - Hfs Where: NPSHa = Net Positive Suction Head Available NPSHr = Net Positive Suction Head Required Ha = Absolute Barometric Pressure Hst = Fluid Supply Level above (Flooded Suction) or below (Suction Lift) Pump Centerline (in feet) Hvp = Vapor Pressure of the fluid pumped at maximum operating temperature at the pump (in feet) Hfs = Suction Line Friction Losses (in feet) The NPSHr as shown on the curves is the minimum NPSH required by the pumps. If the NPSHa is greater than the NPSHr the pump will perform. If the NPSHa is less than NPSHr then the pump will cavitate and some changes to the suction conditions are necessary. Possible solutions are reducing the flow rate, increasing the suction pipe size, selecting a larger pump or lowering the pump speed. 4. Formulas 4. To Convert Head in Feet to Pressure in Pounds per Square Inch: Feet of Head X Specific Gravity = PSIG To convert Pressure in Pounds per Square Inch (PSI) to Head in Feet: PSIG x 2.3 Specific Gravity = Feet of Head 4.3 Specific Gravity of Mud = Mud Weight (lbs/gal) HP required = Curve HP x specific gravity 5. Pump Sizing Rules 5. Volume leaving pump increases until the volume pumped causes Total Head losses equal to its impeller output head. 5.2 It will help in the selection of impeller size if the friction loss curve is plotted on the pump curve. 5.3 Pressure or Head in Feet (meters) When the pump is running pressure will build up. Pressure developed by the centrifugal pump is always specified as Head in Feet liquid. The relation between PSI and head is shown in When sizing centrifugal pumps it is crucial to work in feet of head rather then PSI. PSI varies with the fluid weight while feet of head is a constant. 5.4 Centrifugal Pump Rotation Stand at the drive end to determine the pump rotation. A right had rotation pump turns clockwise looking from the motor end. All the pumps featured in this catalog are right hand rotation. Conversion Factors: To convert into multiply by m³/hr GPM 4.4 m³/min GPM 264 liters/min GPM.264 liters/sec GPM 5.9 Barrels/day GPM.297 cubic feet Gallons 7.48 kg/cm² PSI M³ Gallons 264 meters Feet 3.28 Bars PSI 4.7 grams/cu. cm. SpGr. BHP = GPM X Feet X Sp.Gr. 396 x Efficiency kw = m³/hr x meters x Sp.Gr. 367 x Efficiency Efficiency from curve written as.xx 2 2

13 Affinity Laws If there is a known operating point and a different operating point is required, the following algebraic formulas can be used to accurately predict what changes should be made to alter the flow or head and what the resulting horsepower requirements will be. A pump"s performance can be altered by changing the speed or by changing the impeller diameter. Note that while the speed formulas are very reliable, the impeller diameter formulas are accurate only for small variations in diameter. Speed Formulas or Formulas (Valid for small variations in dia. only, max ") Flow: GPM = RPM or GPM = Dia GPM2 RPM2 GPM2 Dia2 Total Differential Head: TDH = RPM² or TDH = Dia² TDH2 RPM2² TDH2 Dia2² Horsepower: HP = RPM³ or HP = Dia³ HP2 RPM2³ HP2 Dia2³ Example : An 8x6x4 pump with an " impeller is operating GPM at 3 feet and requires 48 HP when pumping water. A contractor wants to be able to increase the discharge pressure to 5 feet. What will be the required impeller diameter, HP, and resulting flow rate? Answers: DIA GPM HP Required New Imp Dia: 5 = X² or.566 * = X or.62" = X 3 ² New Flow rate: X =.62 or.56 * = X or 56 GPM = X HP Required: X =.62³ or 48 *.77 = X or 56 HP = X 48 ³ Example 2: If a system exists and a particular operating point and the elevation are known, it is possible to calculate a new operating point by using the following friction loss formulas. Assume a system exists that has 2 feet of elevation and the pump is transferring water 5 GPM and the pressure gauge reads 5 PSI at the pump discharge. What pressure head is required to produce GPM? First convert PSI to feet: Pressure Head = 5 PSI * 2.3 /. Sp.Gr. Pressure Head = 5 Feet Subtract lift of 2 feet since this is a constant: 5 feet pressure head 2 feet elevation = 95 feet of system friction loss at 5 GPM Use the following formula to determine the new pressure head required to produce GPM in this system: Friction loss = GPM² or X = ² Friction loss 2 GPM2² 95 5² Add back the lift: = 4 or X = 95 (/5)² = 38 Feet It would therefore be necessary to size a pump for GPM at 4 feet to obtain the desired flow rate of GPM in the existing system. SYSTEM HEAD REQUIREMENT WORK SHEET CONDITIONS Liquid Pumped Flow Rate (GPM) Calculated Feet of Head (line 6 ) Specific Gravity Temperature F. Suction: Pipe Size inches. (a) Vertical Distance (liquid surface to pump center line+/-). Positive number if above pump center line or negative number if below pump center line feet. (b) Total length of suction line feet. (c) Straight pipe equivalent of suction fittings: Type Qty. Equiv. Ft. per Fitting Total Equiv. Ft. (Ref. Table on page 25) of Straight Pipe Elbow x = Tee Running x = Tee Branched x = Swing Check x = Globe Valve x = Butterfly Valve x = (c) Sum Total = (d) Add (b) and (c) = equivalent feet of straight suction pipe. (e) Convert to friction loss head: 2. Discharge: Pipe Size inches. (d) x Head Loss (Ref. Table on page 24) = feet of head (friction loss) (2a) Vertical Distance (centerline of pump to highest point in discharge system +/-) feet. (2b) Total length of discharge line feet. (2c) Straight pipe equivalent of discharge fittings: Type Qty. Equiv. Ft. per Fitting Total Equiv. Ft. (Ref. Table on page 25) of Straight Pipe Elbow x = Tee Running x = Tee Branched x = Swing Check x = Globe Valve x = Butterfly Valve x = (2c) Sum Total = (2d) Add (2b) and (2c) = equivalent feet of straight suction pipe. (2e) Convert to friction loss head: (2d) x Head Loss (Ref. Table on page 24) = feet of head (friction loss) 3. Pressure required at discharge point psig x 2.3 = feet of head. Sp.Gr. 4 Total Friction Head (Hf) = (e) + (2e) 5. Total Elevation Head (He) = (2a) - (a) 6. Total Head Required at Pump Discharge = Hf + He + line 3 = feet of head required. NOTE: NPSHa must also be considered. See previous pages for NPSHa calculation method

I’ve run into several instances of insufficient suction stabilization on rigs where a “standpipe” is installed off the suction manifold. The thought behind this design was to create a gas-over-fluid column for the reciprocating pump and eliminate cavitation.

When the standpipe is installed on the suction manifold’s deadhead side, there’s little opportunity to get fluid into all the cylinders to prevent cavitation. Also, the reciprocating pump and charge pump are not isolated.

The suction stabilizer’s compressible feature is designed to absorb the negative energies and promote smooth fluid flow. As a result, pump isolation is achieved between the charge pump and the reciprocating pump.

The isolation eliminates pump chatter, and because the reciprocating pump’s negative energies never reach the charge pump, the pump’s expendable life is extended.

Investing in suction stabilizers will ensure your pumps operate consistently and efficiently. They can also prevent most challenges related to pressure surges or pulsations in the most difficult piping environments.

The 2,200-hp mud pump for offshore applications is a single-acting reciprocating triplex mud pump designed for high fluid flow rates, even at low operating speeds, and with a long stroke design. These features reduce the number of load reversals in critical components and increase the life of fluid end parts.

The pump’s critical components are strategically placed to make maintenance and inspection far easier and safer. The two-piece, quick-release piston rod lets you remove the piston without disturbing the liner, minimizing downtime when you’re replacing fluid parts.