Lochinvar & A.O. Smith 100167442 Relief Valve 340155-7026 The sensing bulb and capillary

The sensing bulb and capillary are constructed from nickel-plated copper

while maintaining a 2-second maximum closing time for immediate safety shutoff

providing reliable combustion system ignition under varying gas pressures

Common Questions: How do I confirm the Fasco A307 is the correct replacement

Lochinvar & A.O. Smith 100167442 Relief Valve 340155-7026 The sensing bulb and capillaryThe Lochinvar & A. O. Smith 100167442 Relief Valve is a critical safety component designed for high efficiency hydronic systems. This 30 PSI relief valve is engineered to protect the heat exchanger from over pressure conditions by providing a precise discharge point. As a genuine OEM replacement part, it ensures total compatibility with the Lochinvar Knight WB series and various A. O. Smith water boilers. The 100167442 model features a 3 4 inch