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  • 4050V Two-Way Dump Valve, High Pressure "N" Trim

    4050V Two-Way Dump Valve, High Pressure "N" Trim

    The Series 4050V valve, with its versatile design, is an excellent choice for use as a dump valve on high pressure scrubbers, separators and other liquid accumulators, as well as for a shut-in valve on plunger lift systems.

  • 2021 Flow Control Throttling

    2021 Flow Control Throttling

    The WellMark Throttling Valve is designed to function as a pressure control valve, and will handle pressure drops up to 4500 psi liquid and 2200 psi gas. It has been used widely in gas gathering systems to regulate flow, CO2, and steam injection systems, as well as in low, medium, and high-pressure separators.

  • 3030 Two-Way Valve, Low Pressure

    3030 Two-Way Valve, Low Pressure

    This valve is ideally suited for on/off or modulating control of liquid, oil, or gas on low pressure applications for use on oil and gas production separators, heater treaters, compressors, or any type of liquid accumulator.

  • 3535 Diaphragm Operated Back Pressure Valve, Low Pressure Single Seat

    3535 Diaphragm Operated Back Pressure Valve, Low Pressure Single Seat

    WellMark’s Back Pressure Valve can be used in any installation where upstream pressure is required to be kept at a preset range. It may also be used as: a pressure relief valve, a custody transfer dump valve to hold a certain back pressure, or as a separator back pressure valve on the gas or liquid side. Upstream pressure is applied to the bottom of the diaphragm through connecting tubing. Spring tension above the diaphragm opposes this pressure, and when the pressure exceeds the pressure setting on the spring, the plug is raised off the seat. By varying the spring tension, the pressure setting can be varied. The typical application for these valves is to hold back pressure on separators, treaters, Lact units, etc.

  • WDV Pneumatic Diaphragm Actuated Dump

    WDV Pneumatic Diaphragm Actuated Dump

    The WDV scrubber valve is used for on/off control of high pressure water, oil or gas. Compressor scrubbers, oil and gas separators, or any liquid accumulators are a few suitable applications. The valve trim is designed to be constantly immersed in the vessel fluid so as to utilize the warmth of the process to help prevent freezing. The WDV opens and closes automatically by pneumatic control from a WellMark level controller and dump valve operator. Diaphragm actuated,WDV dump valves operate at 30-70 psi and up to 2000 psi working pressure depending on model.

  • CVS Series EW Globe Style

    CVS Series EW Globe Style

    The CVS Series EW valve bodies are single port, globe­style bodies with cage guiding, clamped seat rings and push­down­to­close valve plug action.

  • CVS Series V100 - V-Ball

    CVS Series V100 - V-Ball

    The CVS V-100 ball valve design utilizes a standard ball with a triangular shaped wedge formed in it. This design allows for both throttling control and on/off service used in conjunction with a variety of actuators.

  • 5050 Two-Way Double Seated Valve (Balanced)

    5050 Two-Way Double Seated Valve (Balanced)

    These valves are used where higher flow is desired with little force required to operate. These pilot operated double seated, near balanced, valves perform ideally for this service. Additionally, they have been used successfully on separators, meters, and water knockouts, where a reduced signal pressure is available.

  • 5555 Back Pressure Valve, Double Seated (Balanced)

    5555 Back Pressure Valve, Double Seated (Balanced)

    This unique valve, with its simple and near-balanced double-seated design, along with its history of trouble free operation, has contributed materially to its wide acceptance in the oil industry. Primary application is to hold back pressure on separators, treaters, Lact units, and other accumulators when upstream pressure is required to be kept at a preset range. However, this valve may also be used as a differential valve by utilizing secondary signal pressure, along with spring force on top of the diaphragm, to oppose flow pressure applied to the bottom of the diaphragm.

  • 1010 Fuel Gas Control Valve or Low Pressure Motor

    1010 Fuel Gas Control Valve or Low Pressure Motor

    This valve is used as a fuel gas control valve to feed the pilot on heated separators, treaters, and other similar liquid accumulators, as well as a low pressure, low volume dump valve on oil and gas production separators, compressors, or any type of liquid accumulator.

  • Fuel Gas Shut-Off Valve (FGSV)

    Fuel Gas Shut-Off Valve (FGSV)

    The Fuel Gas Shut-Off Valve is for use in fuel gas scrubbers on gas production units, indirect line heaters, heater treaters, etc.

  • DF100 Control Valve
  • Model 360 Control Valve

    Model 360 Control Valve

  • 570 Series Control Valve

    570 Series Control Valve