Lennox 11W01 0.071 Orifice

The Lennox 11W01 is a Piston Orifice Assembly Kit, which is an essential part of HVAC systems. This small but essentialcomponent is used in controlling the flow of the gas in the entire system. It has a well-defined orifice opening of 0.071” in size as required. By controlling the amount of gas that goes within it, it changes its performance and productivity. Common in gas furnaces and boilers, it functions together with the gas pressure regulator. The regulator delivers gas at a particular pressure and the orifice assembly meters flow according to the designed size of the plate.