Lennox 11W00 Piston Assembly 320819-301 this is a non-spring return

this is a non-spring return actuator

25 inch NPT 25-Series main valve designed for precise pressure and temperature control in industrial steam systems

it features a high-density ceramic base and silicon nitride element for superior durability against carbon buildup and oxidation

a standard technician's toolkit with a level and screwdriver is sufficient

The 40VA rating of the 194808 ensures the system has the necessary overhead for localized control components

Lennox 11W00 Piston Assembly 320819-301 this is a non-spring returnThe Lennox 11W00 Piston Assembly is a precision engineered . 067 fixed orifice metering device designed for consistent refrigerant flow control in Lennox and Allied Air residential cooling systems. Engineered for high pressure durability, this HVAC expansion piston ensures optimal evaporator coil performance by maintaining the necessary pressure drop between the liquid line and the coil. Whether you are performing a dry charge unit installation or