The D188 utilizes extended studs on the shaft end for mounting

compatible with various models including the PDV80T series

which helps stabilize fan motor amperage and protects the blower assembly

Repeated tripping usually indicates a draft issue

With a 35-amp contact rating and a dropout voltage threshold of 90V

Weil McLain 383-500-275 Valve Els PW 17895 The D188 utilizes extended studsFor 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