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bleed screw O-ring
Before replacing the full assembly
95 inch water column trip point for accurate CGS boiler safety shut-off
High-Volume Air Delivery: Optimized fin design maximizes airflow efficiency and improves heat exchange rates
Standardized Mounting: 1/16" panel standoff style and quick-connect spade terminals facilitate rapid field replacement and installation
Watts 0590721 Air Vent R-410A bleed screw O-ringThe Watts 0590721 FV 4M1 1 Air Vent is a high performance 1 inch automatic air vent valve designed for veteran contractors managing commercial and residential hydronic heating systems. Engineered with a rugged brass body construction, this vertical pattern vent facilitates the continuous removal of trapped air from both hot and cold water distribution lines, preventing air lock and system noise. It features a 150 PSI maximum pressure rating and a
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