Engine Management


PVX - Pneumatic operated valves

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Model #: Air Intake Valve - PVX


  • Pneumatically operated air intake closure
  • Application of air to close or to open
  • 3", 5" and 8" sizes available
  • Different size adapters available¬†


Product Description

Pneumatically operated diesel engine air intake closure valves based on the standard Chalwyn slimfit 3", 5" and 8" butterfly valves with variants for both hazardous and non-hazardous areas. Available in basic flange mounted for or supplied fitted with hose adapters or an integral flame trap housing.

Body and disc manufactured in corrosion resistant hard anodised aluminium with PTFE coating.

PVX-300, PVX-500 & PVX-800
Air pressure must be applied to these PVX valves to open to the engine run position and needs to be maintained between 4 and 8 bar to hold the intake valve fully open whilst the engine runs.

PVX-301, PVX-501 & PVX-801
With no air pressure applied to these PVX valves they will be fully open and the engine may run. To carry out an emergency stop, apply an air pressure of 4 to 8 bar to close the intake shut down valve. The supply pressure must be vented before attempting to re-start the engine.

Engine Management Categories

Control Panels

About Our range of Control Panel products monitor and control compressors, pumps, generators, and more. Control systems for industrial operations monitor pressure, temperature, liquid level, overspeed, time and vibra­tion. They cover it all, from simple start/stop operations to sophisticated automation systems incorporatiing micro controllers and remote telemetry. Give us a call at our head office on 03 9358 5555 and press Option 1.  


About Essential Diesel Engine Gauges & Safety Products by Chalwyn. Chalwyn Limited has been the leading manufacturer of Diesel Engine Protection Systems for over 25 years making the Petro-Chemical Industry a Safer Place. The Chalwyn range of air intake and fuel shut down valves, spark arrestors, flameproof alternators and engine monitoring equipment are designed to the latest European & US standards for hazardous area operation.  Give us a call at our head office on 03 9358 5555 and press Option 1.


About Axiomatic provides electronic machine controls, components, and systems to the off-highway, military, power generation, material handling, industrial and alternate energy OEM markets. We provide efficient, innovative solutions that focus on adding value for our customers. An emphasis on service and partnership with our customers, suppliers, and employees builds long term relationships and mutual trust. Axiomatic is proud to be a qualified supplier to a number of major equipment manufacturers worldwide. Axiomatic focuses on its core competencies in controls engineering to reduce design costs, improve schedules, and develop an innovative product line. Give us a call at our head office on 03 9358 5555 and press Option 1.


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