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The F-series design utilizes a direct-acting mechanism suitable for air
Key Benefits: Direct OEM Compatibility: Engineered specifically for Lochinvar Crest FB 4000 and FBN4000 series to ensure plug-and-play installation without harness splicing
this is a fixed 50# set relief valve
This factory authorized part replaces legacy numbers like 50DK407028
Wayne 12484 Gasket 320788-702 The F-series design utilizes aThe Wayne 12484 Gasket is a critical standard large burner flange gasket engineered for high performance sealing in oil and gas heating systems. This heavy duty component is designed to provide a secure, airtight interface between the burner housing and the combustion chamber, preventing dangerous fuel leaks and pressure loss. With dimensions typically measuring 4 1 4" ID x 7 3 8" OD, this Wayne Combustion Replacement Part is the standard for