Conbraco 18C-522-5-150 Commercial Temperature and Pressure Relief Valve 1" FNPT 150 PSI 3.625 MBTU

The Conbraco Apollo 18C-522-5-150 is a bronze automatic temperature and pressure relief valve designed for protection of high capacity commercial hot water heaters and storage tanks. This safety valve ensures system protection through self-acting discharge of excess temperature and pressure to optimize system function.

Key Specifications:

• 1" FNPT inlet and 1" FNPT outlet connections
• 150 PSI set pressure rating
• 3,625,000 BTU per hour capacity
• 5" element length
• Maximum temperature service: 210°F (99°C)
• Overall height: 5.6 inches

Construction and Materials:

• ASTM B584 bronze body construction
• ASTM B16 brass seat stem
• Silicone seat disc for reliable sealing
• Nylon element tube coating protects against corrosion
• Type 304 stainless steel element spring
• Type 302 stainless steel element pin

Certifications and Standards:

• ASME Section IV certified capacity
• CSA listed and certified to ANSI Z21.22

The valve features a unique non-metallic coating that protects the element against galvanic and electromechanical corrosion by isolating it from heated water, electrostatically applied and thermobonded for optimum adhesion and extended service life.