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The Watts 1053017 Replacement Knob is the specific OEM component required for the mechanical adjustment of Watts 70A and 70A54P-CAP series tempering valves
018" orifice for propane will result in over-firing and a dangerous pilot flame
How do I know if I need to replace the disc versus the entire valve
Safety Integrity: Vital component for maintaining UL 555 fire-resistance ratings in commercial and industrial HVAC installations
York S1-9951-0861 Gas Orifice The Watts 1053017 Replacement KnobThe York S1 9951 0861 #44 Gas Orifice is a high precision LP gas conversion component engineered specifically for York heating systems. This OEM replacement orifice features a #44 drill size with a 0. 0860 inch diameter, precisely calibrated to regulate liquid propane flow at 11. 0 inches Water Column (W. C.). Designed for robust performance in multi stage gas furnaces and boilers, this part ensures stoichiometric combustion to prevent soot buildup