Overview
PVA pneumatically operated diesel engine air intake closure butterfly valves for either hazardous or non-hazardous areas. Suitable for salt air offshore environments.
PVA-280, PVA-350 and PVA-550 valves open on the application of air pressure. The ‘fail safe’ mode of operation of these models makes them suitable for use in zone 1 and 2 hazardous areas.
PVA-281, PVA-351 and PVA-551 close on the application of air pressure. This type of valve and Chalwyn control system is recommended for larger vehicles that have air brakes.
Features and Benefits
- Simple direct air pressure operation
- Build options to either open or close on the application of air pressure
- Automatic reset on loss of air pressure
- Valve status indicator (on top of actuator)
- ATEX Certified - Ex II2G c TX x