Williams 9902 Adapter 328140-751 Ensure the capillary tube is

Ensure the capillary tube is lead away from the heat piping to prevent false high readings that could cause the valve to close prematurely

the close-off pressure is typically rated at 17 psid with a general-purpose AG actuator and 20 psid with a high-performance AH actuator

Internal Equalization: Reduces installation time and potential leak points by removing the requirement for an external pressure line

Whether you are servicing a rooftop unit or a heavy-duty industrial condenser

while the 1/2 PSI maximum pressure rating ensures stability in high-demand environments

Williams 9902 Adapter 328140-751 Ensure the capillary tube isThe Williams 9902 Vent Adapter is a critical component for surface mounted furnace installations where standard venting configurations are not feasible. Field engineered for Williams Monterey and Forsaire single sided heaters, this top vent adapter facilitates high integrity exhaust connections, particularly when venting into a properly lined chimney. It is specifically designed for systems without a blower motor installed; for configurations