Belimo B340L Valve 321894-709 Universal Versatility: Includes an LP

Universal Versatility: Includes an LP conversion kit and reducer bushings to handle diverse field requirements

Engineered to detect flame rollout conditions—where burner flames escape the heat exchanger—this Single Pole Single Throw (SPST) switch protects the heating unit and surrounding structure from high-temperature damage

As a veteran-grade 1010780 inducer motor replacement

A three-flash code typically indicates an ignition lockout due to the system failing to prove flame after multiple tries

Belimo B340L Valve 321894-709 Universal Versatility: Includes an LPThe Belimo B340L is a robust 1. 5" NPT 3 way ball valve designed for precision control in high demand HVACR hydronic systems. Featuring a 57 Cv rating, this characterized control valve (CCV) is engineered to provide an equal percentage flow characteristic, ensuring stable modulating control and preventing hunting in your domestic hot water or chilled water loops. Constructed with a forged brass body and a 316 stainless steel ball and stem, this mixing