PVX Pneumatic Spring Return Air Shut Off Valve
The Chalwyn 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
- 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
Applications
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 hasardous areas
- Zone 1 and 2 applications to EN 1834 engine safety standards
- US offshore engines to Class 1 Div 1 safety standards
- International offshore platform engine installations
PVX-301, PVX-501, PVX-801
- Petrochemical and LNG refineries
- All international areas where non-failsafe is permitted
- US offshore BOEMRE safety standards
- Zone 2 fire pump engine offshore applications
- Vehicles with air brakes
More Information
ENGINEERING UNITS
IMPERIAL METRIC
| Size (in) | 2.5" |
|---|---|
| Size(mm) | 65 |
| End Connection | Hose Barb |
| Actuation | Pneumatic |
| Position Indication Available | No |
| Connectors | TBD |
| Position Indication Logic | Valve Open - Switch Open |
| Side | Left |
| Elbow Kit | Valve Only (No Elbow) |
| Style | Butterfly |
| Max Air Intake Temp (F) | 257 |
| Min Air Intake Temp (F) | -40 |
| Max Pressure (psi) | TBD |
| IP Protection | No |
| Hazardous Location Certification | No |
| Power To Close or Energize To Run (Fail Safe) | Fail Safe |
| Reset | Auto Reset |