Precision Fuel Metering: The #45 drill size provides an accurate natural gas orifice opening for stabilized burner flames

s data plate or technical manual to ensure a 100% match

and metallic debris that can lead to metering device clogging or compressor failure

and 1172619

which are frequent failures in aftermarket alternatives

Watts 0841005 SVA Vent Precision Fuel Metering: The #45The Watts 0841005 SVA Vent is a professional grade 1 8" angle vent engineered for high performance air removal in one pipe steam heating systems. As a technical replacement for standard non vacuum adjustable float type steam air vents, this unit features a heavy duty brass body and an internal brass float designed to withstand the rigors of commercial and residential steam mains. This adjustable steam air vent allows for precise proportional venting,