even after the sensor heater adjustment on the bottom of the unit has been turned fully clockwise

Most failures result from a weak thermocouple signal

Whether integrated into a new burner system or used for critical maintenance

it can be adapted for three-pipe high-volume applications if necessary

These bearings are typically supplied with a factory grease charge

Watts 0275174 Relief Valve 321894-708 even after the sensor heaterFor high capacity pressure protection in commercial and residential hydronic systems, the Watts 0275174 Series 174A provides a critical safety boundary for hot water heating boilers. This 1 inch NPT pressure relief valve is engineered with a rugged bronze body construction and is factory calibrated to a 75 PSI set pressure, delivering a substantial steam discharge capacity of 2,055,000 BTU hr. Its internal stainless steel spring and non metallic disc