Universal Control Input: Supports 0-10 VDC modulation and 4-20 mA loops for seamless integration with most DDC controllers

Industrial Durability: Rugged DPDT contact mechanism built to withstand the frequent cycling of commercial heating applications

it features no pre-purge (NoPP)

providing the necessary step-down for control circuits

Its all-bronze construction makes it the ideal potable water circulator pump for large residential and light commercial settings

Lennox 77W04 Gas Valve 322838-754 Universal Control Input: Supports 0-10The Lennox 77W04 Gas Valve is a critical OEM component specifically engineered for multi stage heating systems requiring high precision fuel regulation. This 24v 2 stage gas valve (White Rodgers 36J55 254P1) is designed with a 1 2" NPT inlet and outlet, supporting both direct spark and hot surface ignition configurations. As a high performance HVAC replacement part, it handles a maximum pressure of 1 2 PSI with a factory set high fire of 3. 5" W. C.