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Small bronze inline spring check valve with threaded FNPT ends

Milwaukee Valve

Milwaukee Valve UP548T 1/2" Bronze Spring Check Valve FNPT x FNPT

SKU CH-PQED-A7AHF

A 1/2-inch bronze spring check valve with FNPT connections, rated to 250 psi at 150 °F and a cracking pressure of 0.750 to 1.000 psi

  • TypeOther
  • Inline spring ensures quick closure without water hammer
  • Bronze body resists corrosion in potable water systems
  • Low-lead construction meets safe drinking water standards
  • Operates from -20 °F to 353 °F for wide temperature range
  • Rated 250 psi at 150 °F for reliable high-pressure service

1/2" Bronze Spring Check Valve

The Milwaukee Valve UP548T is a 1/2 inch bronze spring check valve with FNPT x FNPT threaded connections. It suits plumbing systems that need automatic backflow prevention in horizontal pipe runs. The inline spring mechanism closes without external power. Low-lead bronze construction meets potable water requirements.

Bronze Body and Bronze Spring

The valve body, seat, seal and spring are all made from bronze for consistent material compatibility. Bronze resists corrosion in water systems rated up to 250 psi at 150 degrees Fahrenheit. The cracking pressure range of .750 to 1.000 psi lets flow start with minimal head loss. Operating temperature spans -20 to 353 degrees Fahrenheit.

Horizontal Installation Only

This model must be mounted horizontally; vertical or angled orientation will prevent the spring from seating correctly. FNPT threads require pipe sealant or tape matched to bronze and the system fluid. Over-tightening can crack the bronze body. Steam service is not rated, so do not install in steam lines.

Highlights

  • Inline spring ensures quick closure without water hammer
  • Bronze body resists corrosion in potable water systems
  • Low-lead construction meets safe drinking water standards
  • Operates from -20 °F to 353 °F for wide temperature range
  • Rated 250 psi at 150 °F for reliable high-pressure service

Specifications

BrandMILWAUKEE VALVE
TypeOther

Questions about this item

Will the bronze spring or seat need replacement after a certain period?

The spring and seat are both bronze, so they resist corrosion and wear without a scheduled replacement interval.

At what pressure does the valve start to open under continuous flow?

Cracking pressure is 0.750 to 1.000 psi, so the disc lifts once inlet pressure exceeds that range.

How hot does the valve body get when water runs at the 250 psi limit all day?

Maximum rated water temperature is 353 °F at 250 psi, so the body will reach the fluid temperature during sustained operation.

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