This is the copper tube assembly only

Anti-Stick Properties: Simplifies future maintenance by preventing the gasket from bonding to the valve face or housing

critical for maintaining proportional output signals in robust HVACR systems

Robust SPNO contact configuration (Normally Open) ensures a reliable circuit path for secondary fan motors or humidifiers

System Protection: Effectively traps mineral contaminants from the water supply

Williams P296201 Switch This is the copper tubeThe Williams P296201 Switch is a mission critical differential temperature switch designed specifically for Williams Forsaire Counterflow top vent and Magnum High Efficiency furnace models. This genuine OEM replacement part functions as a high limit safety and blower control, featuring a fixed 165F setpoint for circuit interruption or activation, with a precise 35F differential. When the heat exchanger reaches the 165F threshold, the switch engages or