As the industry leading manufacturer of reciprocating pumps, National Oilwell Varco offers an array of field-proven, reliable pumps backed by a global technical support team. Our product line includes continuous and intermittent duty pumps available in single-acting and double-acting models. With simplex, duplex, triplex, and quintuplex designs, we have an option that can meet your needs in nearly every application.
Pumps & Service offers the following pump product lines:
Reciprocating Pumps (Pumps & Service is a Certified Repair Facility for National Oilwell Varco Reciprocating Pumps)
You won’t find a more complete offering of rugged and reliable reciprocating pumps anywhere in the world. National Oilwell Varco manufactures quality and reliability into every continuous and intermittent duty reciprocating pump that comes off the production line.
These field-proven and time-tested pumps are available in simplex, duplex, triplex and quintuplex designs.
Piston and plunger designs are available from 2 HP to 2250 HP.
Each power frame and fluid end is rugged enough to withstand the toughest conditions.
Each frame is precision-bored to provide stability and matched alignment.
Standard fluid ends are manufactured in a wide range of materials to meet the most demanding applications.
Progressing Cavity Pumps
Different as they are, mine water, raw sewage, sludge cake, latex, crude oil, lime slurry, and molasses all have one thing in common: they can be pumped using NOV Monoflo progressing cavity (PC) pumps. PC pumps are ideal for handling shear-sensitive fluids that contain abrasive materials and/or high solids content regardless of their viscosity. PC pumps consist of a single helix shaft (rotor) that rotates within a double helix fixed housing (stator).The rotor always has one less helix than the stator, so when it rotates, it forms a continuous cavity that progresses towards the discharge end of the pump to convey process fluid out. With a PC pump, pressure is independent of speed, which allows the pump to achieve the head required while running at a low speed for long wear life. Well-suited for both low- and high-flow applications, PC pumps can be adapted into multi-stage pumps for high pressure-handling capabilities. Features and Benefits:
Continuous cavities handle suspended solids with ease
Constant discharge capacity for a given speed, rotation, and pressure for accurate metering and dosing
Reduced wear extends periods between routine maintenance
Positive displacement for a uniform flow
Dual directional capability allows one pump to meet all operational needs
Ability to turn suction chamber 90° for easy installation
Rotary Lobe Pumps
Monoflo’s range of hygienic rotary lobe pumps have been specifically developed to prevent product contamination. High specification models are designed according to 3A and EHEDG certification and the pumps are suitable for clean in place and sterilization in place. As the rotors rotate in an opposite direction without contact with each other or the casing, the metal parts do not wear and contaminate the product. With maximum flow volumes up to 1320 gpm, Monoflo’s lobe pumps are able to handle a wide range of viscosities. Rotary lobe pumps have many advantages, particularly in the food and beverage and pharmaceutical industries.
Manufactured to a hygienically approved design
They can self prime on low lifts with standard clearance rotors
Can handle solids in suspension
They can run dry for short periods when using standard rotors. Suitable for applications where dry-running occurs or is required as part of the process.
The gentle pumping action minimizes shear and crush damage to delicate liquids containing soft solids