Illinois 0037100 Steam Trap 318973-401 Proven Hot Surface Ignition means

Proven Hot Surface Ignition means the module verifies the igniter has reached sufficient temperature for combustion before opening the gas valve

This general close-off actuator is compatible with both 2-way and 3-way Erie zone valves

Compatible with multiple actuator mounting options for seamless integration into Building Automation Systems (BAS)

replacing brittle or flattened 96451 isolators is a primary troubleshooting step when a unit heater is producing disruptive mechanical noise or cabinet rattle

Precision LP Calibration: Factory-tuned for liquid propane applications

Illinois 0037100 Steam Trap 318973-401 Proven Hot Surface Ignition meansThe Illinois 0037100, also identified as the Watts WFT 15, is a heavy duty 3 4" float and thermostatic steam trap engineered for reliable condensate removal and continuous air venting in low pressure systems. Featuring a rugged cast iron body and an H pattern design, this trap is specifically built for steam main drips, unit heaters, and heat exchangers where rapid air elimination is critical during startup. The internal stainless steel float and