This collar is specifically intended for 1/2" round or 3/8" square shaft adapters

Ensure the manifold pressure is clocked correctly to meet nameplate requirements during commissioning

Built for versatility in the field

and control module to address complete ignition subsystem failures

the KP15 pressure control is designed to handle the high-side requirements of 410A applications

Williams P321888 Manifold Adapter 322056-301 This collar is specifically intendedThe Williams P321888 Manifold Adapter is a precision engineered OEM replacement part designed specifically for residential and commercial Williams Forsaire furnaces equipped with a standing pilot system. As a veteran grade HVAC replacement part, this adapter ensures a secure, leak free connection between the gas valve and the burner manifold, critical for maintaining proper manifold gas pressure. Furnace manifold repair often requires specific