View the blade from the discharge side

including V800

often caused by a restricted air filter

preventing stripping during field installation

supporting both standard round damper shafts and specialized splined actuator outputs

Honeywell 309807 Seat View the blade from theThe Honeywell 309807 Seat is a critical mechanical component engineered specifically for the VP501 and VP525C Series pneumatic radiator valves. Built for the rigorous demands of two pipe steam and hot water systems, this replacement valve seat ensures a tight, reliable seal to prevent bypass leakage and maintain precise terminal equipment control. As a genuine Honeywell HVAC part, it is designed to restore original factory close off ratings and extend