Description
Conbraco Industries 17-402-04 Hot Water Pressure Relief Valve
The Conbraco Industries 17-402-04 is a heavy-duty hot water pressure relief valve engineered to protect boilers, water heaters, and hydronic heating systems from dangerous over-pressure conditions. With a factory-set relief pressure of 150 PSI and a rated capacity of 934,000 BTU, this valve delivers dependable, automatic pressure protection for demanding residential and commercial hydronic applications.
Key Features
- Factory set at 150 PSI — provides consistent, reliable pressure relief without field adjustment
- 934,000 BTU rated capacity — suitable for high-output boilers and water heating systems
- 3/4″ Male NPT inlet connection for straightforward installation on standard boiler tappings
- 3/4″ Female NPT outlet connection for easy discharge line attachment
- Automatic re-seating design — valve closes once system pressure returns to safe operating levels
- Durable construction built to withstand the rigors of hot water heating environments
Specifications
- SKU: 17-402-04
- Brand: Conbraco Industries
- Valve Type: Hot Water Pressure Relief Valve
- Inlet Connection: 3/4″ Male NPT
- Outlet Connection: 3/4″ Female NPT
- Set Pressure: 150 PSI
- BTU Capacity: 934,000 BTU
Applications
- Hot water boilers and hydronic heating systems
- Residential and light commercial water heaters
- Closed-loop hydronic heating circuits requiring over-pressure protection







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