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Bronze temperature and pressure relief valve with white finish, 3/4 inch FNPT connections

Apollo

Apollo 18C5125125 Temperature and Pressure Relief Valve 125 psi

SKU CH-J1B8-F8HK8 MPN 18C5125125

Temperature and pressure relief valve with ¾-inch FNPT connections, bronze body, 125 psi factory setting and 210 °F maximum temperature

  • TypeDrain Components
  • ColorWhite
  • Factory-set 125 psi protects water heaters from over-pressure
  • 205,000 BtuH capacity handles high-demand residential systems
  • Auto re-seating design restores seal after pressure release
  • Bronze body with stainless steel spring resists corrosion
  • ANSI Z21.22, ASME HV and CSA certified for code compliance

Temperature & Pressure Relief Valve

This valve protects water heaters by discharging when temperature reaches 210 °F or pressure hits 125 psi. It features a bronze body, stainless-steel spring and automatic re-seating after activation. The FNPT inlet and outlet both measure 3/4 in. It meets ANSI Z21.22, ASME HV and CSA standards.

Suitable Installations and Limitations

The unit suits residential and light-commercial water-heating systems requiring a factory-set 125 psi relief point. It will not serve installations that demand a different pressure setting, a non-FNPT connection or a higher BtuH capacity than 205 000.

Deciding Specification

The factory-set pressure of 125 psi is the single figure that determines whether this valve matches the system design. Verify the required relief pressure before purchase.

Highlights

  • Factory-set 125 psi protects water heaters from over-pressure
  • 205,000 BtuH capacity handles high-demand residential systems
  • Auto re-seating design restores seal after pressure release
  • Bronze body with stainless steel spring resists corrosion
  • ANSI Z21.22, ASME HV and CSA certified for code compliance

Specifications

TypeDrain Components
ColorWhite
BrandApollo
Model18C5125125

Questions about this item

What pressure rating does the ANSI Z 21.22 and ASME Code HV valve cap at?

The valve is factory set at 125 psi and meets ANSI Z 21.22 and ASME Code HV standards for temperature and pressure relief.

What inlet and outlet connections are required to mount this valve?

The valve has a 3/4 inch FNPT inlet and a 3/4 inch FNPT outlet, so matching female NPT fittings are needed for installation.

How is the thermostat probe installed and what common step is missed?

Insert the 5 inch thermostat probe directly into the tank tapping so it contacts the water; the step often missed is ensuring the probe is fully immersed and not blocked by insulation or fittings.

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