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Brass water pressure reducing valve with threaded connections

Watts

Watts LF 223 Water Pressure Reducing Valve 3/4 In

SKU CH-KSWY-0HZ1F

Reduces water pressure to a 50 psi preset with a 25 to 75 psi adjustment range on 3/4 inch FNPT connections

  • Reduces water pressure to a safe 50 psi preset
  • Adjustable from 25 to 75 psi for system tuning
  • Lead-free brass body meets potable-water standards
  • Rated to 300 psi inlet and 160 °F maximum temperature
  • Certified to ASSE 1003, ANSI A112.26, CSA B356 and MIL-V-18146B

Pressure Reducing Valve 223

The Watts LF 223 is a water pressure reducing valve built for residential and light commercial plumbing systems. It connects to 3/4 inch FNPT piping and lowers incoming supply pressure to a safer level for downstream fixtures. The valve is constructed from lead-free brass for potable water compliance.

Factory Preset and Adjustable Range

The unit leaves the factory preset at 50 psi and can be adjusted between 25 and 75 psi to suit specific system requirements. No integral strainer is included, so debris protection must be provided separately if required by local code or water quality conditions. The super-capacity design supports higher flow demand without excessive pressure drop.

Temperature and Pressure Limits

The valve withstands a maximum working pressure of 300 psi and a maximum temperature of 160 degrees F, covering typical municipal supply conditions. It meets ASSE 1003, ANSI A112.26, CSA B356 and MIL-V-18146B standards for performance and safety. Systems requiring pressure settings above 75 psi or temperatures exceeding 160 degrees F will need a different valve specification.

Highlights

  • Reduces water pressure to a safe 50 psi preset
  • Adjustable from 25 to 75 psi for system tuning
  • Lead-free brass body meets potable-water standards
  • Rated to 300 psi inlet and 160 °F maximum temperature
  • Certified to ASSE 1003, ANSI A112.26, CSA B356 and MIL-V-18146B

Specifications

BrandWATTS

Questions about this item

How often should the lead-free brass body of the LF 223 be inspected for mineral buildup?

The valve body has no internal strainer, so periodic visual checks for scale on the brass seats are the only scheduled maintenance the LF 223 requires.

Will the 25 to 75 psi adjustment range still hold if inlet pressure stays at 300 psi for hours?

The LF 223 is rated for a maximum inlet pressure of 300 psi, and the adjustable spring keeps outlet pressure within the 25 to 75 psi band as long as supply stays at or below that limit.

Does the 3/4 inch FNPT valve body get hot when water runs continuously at 160 degrees F?

At the rated 160 degrees F maximum temperature the brass body will reach water temperature, but the LF 223 has no moving electrical parts so it generates no additional heat of its own.

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