Conbraco 17-402-04 Relief Valve This 1/4-inch NPT HVAC temperature

This 1/4-inch NPT HVAC temperature sensor well is a direct OEM replacement designed to house analytical probes for accurate aquastat or controller feedback

Broad Compatibility: Supports field mounting on a wide range of Schneider Electric and legacy Barber Colman globe valves sized up to 2 inches

The flashing sequence typically corresponds to a specific HVAC error code found on the unit's wiring diagram or blower door label

ensuring the flame remains precisely positioned to satisfy the safety circuit

This OEM replacement part ensures compliance with local electrical codes while protecting internal circuitry from high-temperature environments typical of gas-fired heat exchangers

Conbraco 17-402-04 Relief Valve This 1/4-inch NPT HVAC temperatureThe Conbraco 17 402 04 Relief Valve is a high capacity, pressure only safety device engineered specifically for hot water heating boilers and hydronic systems. Featuring a rugged cast bronze body and a 3 4 inch MNPT inlet x 3 4 inch FNPT outlet, this ASME Section IV certified valve is factory set to 150 PSI. It provides critical protection against thermal expansion, supporting systems with a discharge capacity up to 934,000 BTU HR. Designed for