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Bronze inline swing check valve, 2.125 inches long, FNPT connections

Milwaukee Valve

Milwaukee Valve 510T 3/8 Swing Check Valve 2.125 in

SKU CH-HJ9E-4H541

A 3/8-inch bronze swing check valve with PTFE seal rated for 300 psi water and 150 psi steam service

  • Size3/8 in
  • Bronze body resists corrosion for long service life
  • Inline swing design allows horizontal or vertical mounting
  • PTFE seal handles temperatures from -20 °F to 406 °F
  • Rated 300 psi water pressure at 150 °F for reliable flow control
  • 6 gpm capacity with 0.750–1.000 psi cracking pressure

Milwaukee Valve 510T Check Valve

This Milwaukee Valve 510T is a 3/8 inch bronze swing check valve designed for inline installation in piping systems. It suits residential or light commercial plumbing where backflow prevention is required. The FNPT x FNPT connections allow direct threading onto standard pipe fittings. Buyers needing a different pipe diameter or a flanged connection cannot use this model.

Sustained-flow behaviour

The valve handles continuous water flow up to 6 gpm at a maximum pressure of 300 psi when water temperature is at 150 degrees Fahrenheit. For steam service the pressure limit is 150 psi WSP. The bronze body and PTFE seal maintain integrity across a temperature range from minus 20 to 406 degrees Fahrenheit. Systems that exceed these pressure or temperature ratings will need a differently rated valve.

Interface limits

The 3/8 inch FNPT threads set the hard limit on pipe size and connection type; larger or smaller pipe requires an adapter or a different valve. Cracking pressure sits between 0.750 and 1.000 psi, so very low-head gravity systems may not open the disc reliably. The valve installs in horizontal or vertical orientation but the flow direction must match the arrow on the body.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $52.99
Pricier than about 57% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameMILWAUKEE VALVE
Product typeOther
Size & build
Size3/8 in

Questions about this item

How much heat can the bronze body and PTFE seal of the 510T handle in continuous service?

The valve is rated for a maximum temperature of 406 °F and a minimum of –20 °F, so it tolerates hot water and steam lines within that range.

What pipe threads must my existing piping have to connect this valve without adapters?

It uses 3/8 inch FNPT × FNPT connections, so both inlet and outlet need matching female National Pipe Taper threads.

Will the 0.750 to 1.000 psi cracking pressure of the 510T work with my low-pressure gravity-fed system?

Yes, the swing-check opens between 0.750 and 1.000 psi, making it suitable for low-head installations that exceed that threshold.

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