effectively cutting power to the gas valve or heating elements

and industrial boiler applications

This kit is specifically designed for ASCO valve models 8321G001

this 24VAC HSI control module provides reliable trial-for-ignition (TFI) sequences with integrated safety timings

Common Questions Which furnace models use the Williams P323661

Utica-Dunkirk 240007140 Pressure Switch 321702-401 effectively cutting power to theThe Utica Dunkirk 240007140 Pressure Switch is a critical safety component designed for high efficiency gas fired boilers and furnaces. Precision calibrated to a . 14"wc set point, this Normally Open (N O) diaphragm switch ensures proper draft and venting before allowing the ignition sequence to proceed. As an OEM replacement part, it offers a direct fit for Utica and Dunkirk hydronic systems, maintaining the narrow pressure tolerances required for