Lochinvar & A.O. Smith 100110788 Kit R-134A this expansion valve part allows

this expansion valve part allows technicians to adjust capacity or perform maintenance without removing the entire valve body from the line

the 121-8 series is compatible with propane

Key Benefits Efficient Combustion: Ensures negative pressure to safely exhaust flue gases and prevent backdrafting

Secure Terminals: Equipped with heavy-duty lug connectors and spade terminals for high-integrity electrical pathways

Smith 100208549 Inlet Water Sensor is a critical genuine OEM replacement part engineered for high-precision temperature monitoring in commercial and residential hydronic heating systems

Lochinvar & A.O. Smith 100110788 Kit R-134A this expansion valve part allowsThe Lochinvar & A. O. Smith 100110788 is a critical switch and harness assembly designed for high recovery gas fired water heaters. As an OEM spec component, this assembly integrates the thermal switch and specialized wiring to maintain precise communication between the burner controls and the safety limit circuits. For technicians troubleshooting intermittent ignition or lockout codes, replacing the 100110788 water heater part ensures the system