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Iron fill and relief valve, red finish, half-inch FNPT connections

Watts

Watts 1450F Fill Relief Valve 1/2 In 15 psi Iron

SKU CH-63XR-QSVNA

Combination fill and relief valve for hydronic heating systems, factory set at 15 psi with a 10 to 100 psi adjustable range

  • TypeOther
  • Combines fill and relief in one valve body
  • Factory set at 15 psi with 10 to 100 psi adjustment range
  • Iron body with bronze seat and stainless steel spring
  • Silicone disc operates from 0 to 212 degrees F
  • Includes test lever for manual pressure checks

Fill and Relief Valve for Hydronic Heating

The Watts 1450F is a combination fill and relief valve designed for commercial and residential hydronic heating systems. It maintains system pressure with a factory setting of 15 psi and an adjustable range of 10 to 100 psi. The iron body with bronze seat and silicone disc handles temperatures up to 212 degrees Fahrenheit. A test lever is included for manual operation checks.

Iron Body with FNPT Connections and Stainless Spring

The valve body is constructed from iron with 1/2 inch FNPT inlet and outlet connections for threaded pipe installation. Internal components include a bronze seat and a stainless steel spring for corrosion resistance. The silicone disc material provides a reliable seal across the operating temperature range. Overall dimensions are 5 1/16 inches in height and 6 1/2 inches in length for space planning.

Verify System Pressure and Piping Compatibility

Before ordering, confirm the existing hydronic system operates within the 10 to 100 psi adjustable range and the 15 psi factory setting matches design requirements. Ensure the piping uses 1/2 inch FNPT threads to match the valve connections. Check that the maximum system temperature does not exceed 212 degrees Fahrenheit. Note that this item is restricted from sale in certain states.

Highlights

  • Combines fill and relief in one valve body
  • Factory set at 15 psi with 10 to 100 psi adjustment range
  • Iron body with bronze seat and stainless steel spring
  • Silicone disc operates from 0 to 212 degrees F
  • Includes test lever for manual pressure checks

Specifications

BrandWATTS
TypeOther

Questions about this item

What pressure does the 1/2 in FNPT valve open at from the factory?

The Watts 1450F is factory set at 15 psi and can be adjusted between 10 and 100 psi for hydronic heating systems.

What clearance does the 6 1/2 in long iron body need for installation?

The valve measures 6 1/2 in overall length and 5 1/16 in height, so allow space for the test lever and pipe connections on both 1/2 in FNPT ends.

How is the test lever used after the valve is threaded in?

Lift the included test lever manually to verify the silicone disc opens at the set pressure; the common error is skipping this check once the piping is pressurised.

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