GC Valves S211GH02T2HJ5 Solenoid Valve 321702 401 which coordinates ignition and burner which coordinates ignition and burner cycles with field proven reliability This 100278055 part is specifically calibrated for LP systems and should be verified against the appliance's serial and model 100278055 requirements to maintain safe operating parameters NEMA 4X Protection: The 1 2" conduit hub provides a watertight and dust tight seal for the electrical connections in harsh mechanical rooms the best practice for longevity is to install the solenoid in a vertical and upright position to prevent sediment build up in the core tube