York Parts S1-9951-0931 Gas OrificeYork Parts S1 9951 0931 is a precision gas orifice designed for LP gas appliances. This replacement part, designated #42, features a 0. 0935 inch bore to deliver consistent gas flow, supporting reliable ignition and efficient combustion in compatible York units. Built to meet the precise tolerances of York LP gas systems, this orifice helps maintain flame stability and safe operation across routine service cycles. Use as a genuine replacement part to

Enclosure: Heavy-duty steel for rugged environments

with a wide operating temperature range of -40 to 175 F and a pressure rating of 1/2 PSI

Compact size enables easy installation and retrofit

Designed for Resideo / Honeywell Home remote mount bypass humidifiers

The PPC6000

Rotation: Clockwise rotation

durable construction built for demanding environments

Compliance: RoHS compliant for eco-friendly operation

FM listed for broad compatibility and safety

helping your system maintain steady temperatures and cut energy costs

Equipped with a natural to liquid propane conversion kit

minimizing calibration needs and extending the life of your Fireye control system