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and heating elements
This is an 8-hole gasket designed to align with the standard flange patterns found on 09RA series equipment
Repeated tripping typically indicates a restriction in airflow
The Watts 0887709 (RK 800M4V) is a professional-grade pressure vacuum breaker vent float kit designed specifically for the 1/2" and 3/4" 800M4 series backflow preventers
Specifically calibrated to 275 degrees F for high-tolerance flame rollout protection
Weil McLain 383-500-275 Valve Els PW 17895 and heating elementsFor service technicians maintaining high efficiency hydronic systems, the Weil McLain 383 500 275 Pressure Temperature Gauge Check Valve is the standard specification for the Ultra Gas Boiler series, including Ultra 80, 105, and 230 models. Built as a 1 2 inch NPT threaded component, this P T gauge check valve serves a dual purpose: it provides a secure connection point for system monitoring while acting as a reliable backflow preventer. Its