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Brass water pressure regulator valve with sealed spring cage and strainer, FIP connections, 9-inch body

Watts

Watts 1/2 LF223-S Pressure Regulator Valve 1/2 in

SKU CH-HY11-MS00G MPN 1/2

Brass water pressure regulator with 25 to 75 psi adjustment range, 300 psi maximum pressure and 160 °F temperature rating for commercial and industrial plumbing

  • TypeDrain Components
  • Adjustable pressure control from 25 to 75 psi
  • Brass body withstands up to 300 psi operating pressure
  • Rated for temperatures up to 160 degrees Fahrenheit
  • IAPMO certified for commercial and industrial use
  • Includes sealed spring cage and built-in strainer

Purpose and Application

The Watts LF223-S is a brass water pressure regulator valve designed for commercial and industrial plumbing systems. It reduces incoming supply pressure to a controlled range of 25 to 75 psi through a 1/2 inch FIP connection. The unit includes a sealed spring cage and integrated strainer for reliable operation.

Thermal and Pressure Limits

The valve body withstands a maximum pressure of 300 psi and handles water temperatures up to 160 degrees Fahrenheit. These ratings define the safe operating envelope for hot and cold water distribution networks in the specified environments.

Build and Installation Notes

The brass construction provides corrosion resistance for long service life in demanding applications. The 1/2 inch female iron pipe threads on both inlet and outlet dictate the pipe size and fitting type required for installation. The nine inch length and eight and a quarter inch height determine the space needed in the piping layout.

Highlights

  • Adjustable pressure control from 25 to 75 psi
  • Brass body withstands up to 300 psi operating pressure
  • Rated for temperatures up to 160 degrees Fahrenheit
  • IAPMO certified for commercial and industrial use
  • Includes sealed spring cage and built-in strainer

Specifications

TypeDrain Components
BrandWatts
Model1/2 LF223-S

Questions about this item

How do I install the 1/2 in FIP connections on this LF223-S regulator, and what step do people miss?

Thread the 1/2 in FIP inlet and outlet onto matching pipe threads with sealant, then set pressure between 25 and 75 psi using the adjustment screw; the step often missed is flushing the line before final tightening so debris does not clog the internal strainer.

What maintenance or replacement will the LF223-S need over time?

The sealed spring cage is non-serviceable, so the only routine task is cleaning the built-in strainer; if pressure drifts outside the 25 to 75 psi range or the brass body shows corrosion at 160 °F service, replace the entire valve.

What limit appears first when the LF223-S runs continuously at high demand?

The 300 psi maximum inlet pressure rating is the first hard limit; sustained pressure above that can damage the brass body and sealed cage before the 160 °F temperature ceiling becomes a factor.

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