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Omni Valve Model PMX

Omni Valve Model PMX is a pneumatic piston actuator with integrated manual override for surface safety valves requiring fail-safe pneumatic operation and an integral manual hold-open function. It supports safety-critical isolation and valve automation where predictable operation and serviceability matter. Request a quote for Omni Valve Model PMX from AxFlow.

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Key product features

  • Integrated manual override → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Fail-safe piston actuation → supports reliable selection, operation or maintenance in safety-critical valve service.
  • 5,000 and 10,000 psi valve assembly options → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Field-replaceable pressure relief device → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Rotatable actuator orientation → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Convenient pressure ports → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Integrated metal-to-metal backseat → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Corrosion-protected housings → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Serviceable non-metallic seals → supports reliable selection, operation or maintenance in safety-critical valve service.
  • Ready-mounted valve assembly option → supports reliable selection, operation or maintenance in safety-critical valve service.

Product Description

Omni Valve Model PMX is specified for surface safety valves requiring fail-safe pneumatic operation and an integral manual hold-open function. In these duties, a dependable response is important because a failure to isolate or move a valve can affect personnel safety, equipment protection and process continuity. AxFlow can support selection against the required valve interface, operating pressure, environment and shutdown philosophy.

The product uses a pneumatic piston actuator with integrated manual override architecture developed for energy-industry valve service. Its construction focuses on controlled valve movement, maintainable components and integration with the associated valve or control system. The exact configuration should be selected for the valve size, required stroke, control medium and site conditions.

Published manufacturer data for Omni Valve Model PMX includes documented for 5,000 and 10,000 psi valve assemblies; integrated manual override; field-replaceable pressure relief device. These values describe the available product/configuration range and should not be interpreted as a universal operating point for every assembly.

For maintenance teams, correct actuator or valve sizing, accessible service components and suitable accessories help reduce intervention time and the risk of unplanned shutdowns. AxFlow can help identify the appropriate configuration and support spare-parts and service planning. Contact AxFlow for product selection, configuration and availability.


Omni Valve Model PMX is used for surface safety valves requiring fail-safe pneumatic operation and an integral manual hold-open function. Its function is to support controlled isolation or valve movement in energy applications. The final configuration should be matched to the actual valve and operating conditions.
Key published data includes documented for 5,000 and 10,000 psi valve assemblies; integrated manual override; field-replaceable pressure relief device. Selection also requires the valve interface, required stroke, control medium and site environment. Confirm the complete duty before ordering.
The pneumatic piston actuator with integrated manual override construction is intended for controlled operation in critical valve duties. Suitable accessories and configuration can support shutdown, position indication or maintenance requirements depending on the product. The complete safety function must be engineered at system level.
Check the valve size, pressure class, actuator force or torque requirement, control pressure, temperature, materials and required accessories. For legacy or project-specific configurations, availability should also be confirmed. AxFlow can help review these requirements.
AxFlow can support product identification, configuration review, spare-parts planning and service requirements for Omni Valve Model PMX. Exact parts and compatibility should be confirmed from the valve or actuator identification and duty. Contact AxFlow with the installed equipment details.
SIA AxFlow