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Bronze POP safety valve with stainless steel spring and test lever, 1-1/4 by 2 inch NPT connections

Apollo

Apollo 511GFBKMAA0075 POP Safety Valve 1-1/4 x 2 in 75 psi

SKU CH-79H2-HB3P3

Bronze POP safety valve with 1-1/4 in MNPT inlet, 2 in FNPT outlet, 316 stainless steel disc, factory set at 75 psi and rated 15 to 300 psi

  • Factory-set at 75 psi protects systems from over-pressure
  • Bronze body with 316 stainless steel disc resists corrosion
  • Operates from -320 °F to 406 °F for extreme conditions
  • Adjustable range of 15 to 300 psi suits varied applications
  • CRN certified and includes a test lever for easy inspection

Apollo 511GFBKMAA0075 POP Safety Valve

This APOLLO VALVES relief valve is a bronze-bodied, spring-loaded device designed to protect pressurised piping systems from over-pressure. It is suited for industrial, commercial or institutional installations where a factory-set 75 psi opening point is required.

Sustained over-pressure behaviour

The valve begins to lift at the 75 psi set pressure and is rated to relieve flow up to the 300 psi upper limit of its pressure range. Its 316 stainless-steel disc and stainless-steel spring maintain consistent reseating after repeated cycles, while the metal seat withstands the -320 to 406 °F temperature span without degradation.

Bronze body with MNPT inlet and FNPT outlet

The 1-1/4 in male NPT inlet threads directly into standard pipe fittings, and the 2 in female NPT outlet accepts common discharge piping. A test lever is included for manual verification of operation, and the assembly carries CRN registration for Canadian jurisdictions.

Highlights

  • Factory-set at 75 psi protects systems from over-pressure
  • Bronze body with 316 stainless steel disc resists corrosion
  • Operates from -320 °F to 406 °F for extreme conditions
  • Adjustable range of 15 to 300 psi suits varied applications
  • CRN certified and includes a test lever for easy inspection

Specifications

BrandAPOLLO VALVES

Questions about this item

How much heat can the bronze body and 316 stainless steel disc handle during continuous operation?

The valve is rated for a temperature range of -320 to 406 degrees Fahrenheit, so the materials withstand sustained high heat without degradation.

What pipe threads must my system already have to install this 1-1/4 x 2 inch valve?

Your piping needs a 1-1/4 inch male NPT inlet connection and a 2 inch female NPT outlet connection to match the valve ends.

Will the factory 90 psi setting work if my older boiler relief piping is only rated to 75 psi?

The factory set pressure is 90 psi, which exceeds a 75 psi piping rating; the valve can be adjusted within the 15 to 300 psi range to suit lower-rated systems.

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