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Pressure Relief Valves with Test Lever

Series 53L Pressure Relief Valves are used in residential applications to protect against excessive pressure on domestic storage tanks and tankless water heaters. They have a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, and test lever. ANSI Z21.22 approved, design certified and listed by CSA, and UL listed. Pressure Range: 75 to 175psi (5.2 to 12.1 bar). Standard Pressure Setting: 75psi (516.7 kPa). Optional Settings: 100, 125, and 150psi (6.9, 8.6, and 10.3 bar); also available at 50psi (3.45 bar) setting.


  • Furnished with test lever
  • 3/4 in. (20mm)
  • Model available for outdoor solar applications
  • Valve protects domestic storage tanks and tankless water heaters from excessive pressure

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Approval Information

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