Overview
The PVX Pneumatic Spring Return Butterfly Valve uses a spring return rotary actuator. It is available in two basic versions:
- Air pressure to open / spring return close on loss of air pressure (failsafe)
- Air pressure to close / spring return open on loss of air pressure
Both versions are designed to work with direct pressure operation in either automatic or manual systems.
Features & Benefits: Failsafe PVX-300, PVX-500, PVX-800
- Pressure to Open / Loss of Pressure to Close
- Failsafe application to meet EU ATEX 94/9/EC defined hazardous areas
- Zone 1 and 2 applications to EN 1834 engine safety standards
- US offshore engines to Class 1 Div 2 and Div 1 safety standards
- International offshore platform engine installations
Features & Benefits: PVX-301, PVX-501, PVX-801
- Petrochemical and LNG refineries
- All international areas where non-failsafe is permitted
- US offshore BOEMRE 2011 Safety Standards
- Zone 2 fire pump engine offshore applications
- Vehicles with air brakes
Common Features:
- For use in automatic or manual shutdown systems
- Operating pressure range 43.5 to 116psig (3 to 8bar)
- Slim-fit 3”, 5”, and 8” (76mm, 127mm, and 203mm) valve body
- Basic flange mount with hose adaptors available (1½” to 8” | 38 to 203mm)
- Valve bodies and discs are PTFE coated hard anodized aluminum
- Shaft and mechanisms are stainless steel
PVX Pneumatic Spring Return Butterfly Valve Models Available:
Valve Size: (3” | 76mm) (5” | 127mm) (8” | 203mm)
Pressure to Open PVX-300 PVX-500 PVX-800
Pressure to Close PVX-301 PVX-501 PVX-801