This diaphragm-actuated switch is commonly utilized for clogged filter detection

effectively converting rotary motion into linear force through damper linkage kits like the ZG-LF112

reducing the need to carry multiple ignition modules on the truck

extending the operational life of the transformer

providing the critical pressure differential sensing required to engage the control board and burner tray

Robertshaw 700-503 Gas Valve Els PW 29614 This diaphragm-actuated switch is commonlyThe Robertshaw 700 503 Gas Valve is a millivolt combination gas control designed for heavy duty HVACR applications, including high capacity 1" pipe systems up to 720,000 BTU. This wall thermostat actuated valve features a 1 2" FPT inlet and a 3 4" FPT straight thru outlet, with additional 1 2" FPT side taps provided for installation flexibility in tight furnace or pool heater cabinets. As a non regulated (7000BMV) model, it is engineered for systems