Description
Key Benefits Precise Fitment: The 1
replacing them with this Spirax-Sarco pilot repair kit restores the factory-spec sensitivity required for dead-end shut-off and accurate pressure maintenance
Does this kit support NPT threading
or 90-degree positions
Williams P323663 Safety Switch 319852-301 Key Benefits Precise Fitment: TheThe Williams P323663 Safety Switch is a critical OEM vent limit protection component designed to maintain the operational safety of your gas fired heating equipment. Engineered as a safety limit switch for Williams wall furnaces and vented room heaters, this part features a high precision sensor that triggers at a fixed 200F temperature. When the exhaust gases in the vent reach this thresholdoften due to a blocked flue or inadequate draftthe switch
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy

























