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Bronze inline swing check valve with FNPT connections, 4.75 in overall length

Milwaukee Valve

Milwaukee Valve 515 2" Swing Check Valve 4.75 in

SKU CH-16NN-W9V9J

A 2-inch inline swing check valve with bronze body and seat, rated for 300 psi water pressure and 131 gpm flow

  • Size2"
  • TypeOther
  • Reliable flow control with 131 gpm capacity
  • Handles hot water up to 406°F for demanding systems
  • Rated for 300 psi water pressure at 150°F
  • Suitable for steam service at 150 psi WSP
  • Low cracking pressure of .500 to .750 psi ensures prompt operation

Application and design

The Milwaukee Valve 515 is a 2-inch bronze swing check valve built for inline installation with FNPT threaded connections. Its horizontal mounting orientation and 0.5 to 0.75 psi cracking pressure suit gravity-fed and low-head pump systems where automatic backflow prevention is required.

Suitable systems and limits

This valve fits residential and light-commercial plumbing, hydronic heating and low-pressure steam lines rated to 150 psi WSP. It is not intended for vertical flow paths, high-cycle automation or services exceeding 300 psi water pressure at 150 °F, nor for fluids incompatible with bronze trim.

Capacity and operating envelope

The bronze body and seat deliver a 131 gpm flow capacity while withstanding temperatures from -20 °F to 406 °F. Headroom exists for typical hot-water circulation loops, but the 300 psi pressure ceiling and fixed horizontal orientation limit use in high-rise boosted systems or vertical risers.

Highlights

  • Reliable flow control with 131 gpm capacity
  • Handles hot water up to 406°F for demanding systems
  • Rated for 300 psi water pressure at 150°F
  • Suitable for steam service at 150 psi WSP
  • Low cracking pressure of .500 to .750 psi ensures prompt operation

Specifications

BrandMILWAUKEE VALVE
Size2"
TypeOther

Questions about this item

What piping must already be in place for the 2" FNPT connections on this swing check valve?

You need 2" NPT threaded pipe or fittings on both the inlet and outlet sides so the valve can thread directly into the line.

Will the 0.500 to 0.750 psi cracking pressure work with a low-head gravity system?

Yes, the low cracking pressure allows the disc to open with minimal head pressure, making it suitable for gravity-fed installations.

How can I confirm the valve is sealing properly after installation?

Pressurise the line up to 300 psi at 150 °F and verify no leakage past the bronze seat while the disc remains closed under back-pressure.

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