York Parts S1-9951-1611 Gas OrificeYork Parts S1 9951 1611 is a precision gas orifice designed for York heating and HVAC systems. This gas orifice #20 (0. 161) precisely calibrates the fuel air mix to support efficient combustion. As a dependable York furnace part, it follows the Orf,gas #20 (0. 161) specification, making it a trusted replacement for maintenance and service. This component helps maintain safe ignition and steady burner performance within compatible York units.

This durable PVC condenser cover helps maintain efficiency and extends the life of your air conditioner

This replacement gasket protects your Weil-McLain unit from moisture intrusion and reduces the risk of corrosion around the clean-out port

it delivers reliable ignition

designed for precise current sensing in automation tasks

Line Interrupter

and steam apps

providing a cost-effective maintenance solution for HVAC professionals and DIY enthusiasts alike

High-sensitivity flame sensing with low false trips

Designed for consistent performance in industrial filtration systems

Easy installation with minimized downtime and straightforward maintenance

Temperature Range: 45–95°F — flexible setting to match comfort needs while supporting energy efficiency

dimensions 4-1/2"W x 2-3/4"D x 5-3/4"H