The York S1-9951-0931 is a precision-engineered LP Gas Orifice designed for specific burner manifold applications in York

Reliable Combustion Safety: Maintains the required pressure switch vacuum

When should this gasket be replaced

this insert facilitates lubrication-free operation and reduces overall maintenance requirements for the drive train

robust housing is built to withstand the thermal cycling typical of HVACR environments

Lennox 38M07 Limit Switch The York S1-9951-0931 is aThe Lennox 38M07 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial HVAC systems. This genuine OEM Lennox part (MPN: 38M07) features a 3 inch insert length and operates as a normally closed switch, ensuring the circuit remains engaged during standard operation. Engineered to prevent heat exchanger damage and unsafe operating conditions, this 135 165F AUTO limit switch automatically