These paddles are rated for use with water

it features a 1

including V800

Robust Construction: Features a high-grade metal housing for enhanced thermal conductivity and long-term durability in high-heat environments

supporting both standard round damper shafts and specialized splined actuator outputs

Honeywell 309807 Seat These paddles are rated forThe 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