Description
Conbraco Industries 18C-551-3-150 Temperature & Pressure Relief Valve
The Conbraco Industries 18C-551-3-150 is a heavy-duty Temperature and Pressure (T&P) Relief Valve engineered for reliable overpressure and overtemperature protection in high-capacity hydronic heating and hot water systems. With a 2″ Male NPT inlet and a 1-1/2″ Female NPT outlet, this valve is built to handle demanding commercial and industrial applications where system safety is paramount.
Key Specifications
- Inlet Connection: 2″ Male NPT
- Outlet Connection: 1-1/2″ Female NPT
- Set Pressure: 150 PSI
- Set Temperature: 210°F
- BTU Capacity: 6,050,000 BTU/hr
- Probe Length: 3″
- Valve Type: Temperature and Pressure (T&P) Relief Valve
Product Highlights
- Factory-set at 150 PSI and 210°F for precise, consistent protection
- High-capacity 6,050,000 BTU/hr rating suits large commercial boilers and water heaters
- 3″ probe length ensures accurate sensing of system temperature
- 2″ Male NPT inlet provides a robust, leak-resistant connection to the system
- 1-1/2″ Female NPT outlet allows straightforward discharge piping installation
- Designed to automatically relieve excess pressure and temperature, protecting equipment and personnel
- Durable construction from Conbraco Industries, a trusted name in flow control and safety valve manufacturing
Application
The 18C-551-3-150 is ideal for use on commercial and industrial boilers, water heaters, and hydronic heating systems requiring a high-BTU-rated T&P relief valve. Its large inlet/outlet sizing and substantial BTU capacity make it well-suited for large-scale installations where smaller residential-grade valves are insufficient.
Why Choose Conbraco Industries
Conbraco Industries has a long-standing reputation for manufacturing precision-engineered valves and flow control products. Their T&P relief valves are built to meet rigorous safety standards, providing dependable protection against dangerous overpressure and overtemperature conditions in critical HVAC and plumbing systems.







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