this component ensures consistent burner light-off in gas-fired equipment

Robust Construction: Precision-balanced rotor and high-quality bearings minimize vibration and mechanical wear

you avoid the common pitfalls of actuator binding and premature gear wear

It is primarily utilized in systems with Hot Surface Ignition (HSI) or Direct Spark Ignition (DSI) and comes factory-set for natural gas at 3

Universal Compatibility: Serves as the primary replacement solenoid valve for the legacy 131S44 series in steam service

Mueller A17921 Manifold 321042-401 this component ensures consistent burnerThe Mueller A17921 ReliefMaster is a heavy duty change over manifold engineered for high demand industrial and commercial refrigeration applications. This HVACR manifold features a 1 2" NPTFE (National Pipe Thread Fuel Extended) inlet and 1 2" NPTFI (National Pipe Thread Fuel Injection) outlets, providing a secure, leak proof transition for dual relief valve setups. With a design pressure (MAP) of 700 psig and a broad operating temperature range of