Fluid End Modules

Fluid end modules are workhorses of mud pump systems, but extreme working environments make them especially vulnerable to stress, wear and damage. In choosing durable fluid end parts that resist cracking and corrosion, you’re making a wise long-term investment for your operations.

Forum offers a full line of high-quality fluid end modules that are entirely manufactured in the United States. Designed for the challenges of higher-pressure drilling, they are crafted with industry-leading materials and technologies to resist cracking and reduce stress concentrations for significantly longer life. Complementary features include our industry-leading P-Quip® liner retention and rod systems. Additional benefits and features include:

  • Significantly reduced internal stresses
  • Banded Bore® technology for selected configurations
  • Machined from 4130 forged heat-treated material
  • Rated working pressure of 7,500 pounds per square inch (psi)
  • Two-piece, L-shape, valve-over-valve and mono-block for well service available
  • Configurations to fit virtually all pump manufacturer designs

Discharge & Suction Manifolds

Forum manufactures discharge and suction manifolds for most mud pumps in the industry today. With options for 5,000 psi and 7,500 psi, we also offer full-custom builds tailored to your application.

Valves & Seats

Forum is the only oilfield equipment provider that manufactures a full range of valves and seats for every drilling and well servicing application.

  • 7,500 psi
  • Standard and high-temperature urethane up to 180-220 degrees Fahrenheit (F)
  • Double-angle, three-web design and four-web design
  • Full open-wing guide design (Roughneck™ style)
  • Full open-wing guide design (WM Baker™ style)

Pump Liners

Forum offers both Zirconia and High Chrome liners for the drilling industry. Our proprietary Zirconia liners are proven to lower liner costs by up to 75 percent over traditional chrome liners, while the extra-smooth surface also extends piston life. Paired with our patented, industry-leading P-Quip liner retention system, the Zirconia option is a gold standard of superior performance.

  • 7,500 psi
  • Available for most pump models
  • High-pressure shoulder to prevent sleeve slippage
  • Chrome sleeve alloy


Forum’s full range of urethane pistons perform under both regular and high-temperature applications. Our new Enduro Head solid-body urethane piston is designed for extreme service and outperforms all competitor offerings. We also offer bonded rubber and replaceable rubber pistons for general service conditions.

Enduro Head

  • 7,500 psi
  • Performance up to 240 degrees F
  • All drilling fluids, including brine
  • Long-wearing pressure seal
  • Solid body with Flex Lip features

Blue Devil

  • 7,500 psi
  • Performance up to 240 degrees F
  • Flex Lip design
  • Oil-based and synthetic muds

Red Head

  • 7,500 psi
  • Performance up to 180 degrees F
  • Oil-based and synthetic muds

Black Max

  • 7,500 psi
  • Performance up to 220 degrees F
  • All drilling fluids, including brine
  • Flex Lip design

General Service Bonded Rubber Piston

  • Performance up to 165 degrees F
  • Best in water-based muds

Replaceable Rubber Piston

  • 7,500 psi
  • Performance up to 200 degrees F
  • Best in water-based muds
  • Replaceable rubber assembly

Pump Module Accessories

Our high-pressure quick-change (HPQC) valve covers can convert your original equipment manufacturer (OEM) cover and help put an end to premature failures. Forum also offers the industry-leading P-Quip valve cover system that eliminates the need for manual force and improves safety/efficiency during drilling operations. We also manufacture a complete line of OEM fluid end accessories that are fully interchangeable with current OEM designs.

  • HPQC valve covers
  • OEM-style threaded rings, screw glands, plugs
  • Liner wear plates
  • Gaskets
  • Valve guides

Press Pony Rod Sealing System

Drilling fluid contamination in the power end of your mud pump can lead to costly repairs. Forum’s Pony Rod Enhanced Sealing System (PRESS™) incorporates a patented polymer with four sealing surfaces and an excluder wiper to provide a superior seal. Case studies have shown up to four times longer life than traditional pony rod seals, lowering operating costs and preventing expensive failures.

  • Abrasion resistant
  • Superior memory and elasticity
  • Dimensionally stable to 275 degrees F
  • Four sealing surfaces
  • Mistake-proof installation