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Bronze swing check valve with threaded ends, 3.5625 in long

Milwaukee Valve

Milwaukee Valve 510T 1 1/4 Swing Check Valve 3.5625 in

SKU CH-SZCR-EP4YA

Inline swing check valve with bronze body and PTFE seal handles 54 gpm at 300 psi water pressure and 150 psi steam

  • Size1 1/4"
  • TypeOther
  • Bronze body resists corrosion for long service life
  • PTFE seal handles 406 °F for high-temperature systems
  • 300 psi water rating supports demanding pressure lines
  • 54 gpm flow capacity keeps circuits running efficiently
  • Installs horizontally or vertically for flexible piping

Product Identity

The Milwaukee Valve 510T is a 1 1/4 inch bronze swing check valve built for residential and light commercial plumbing. It installs inline with female NPT threads on both ends to stop reverse flow in water and steam lines.

Thermal and Pressure Limits

Rated for 300 psi water pressure at 150 degrees F and 150 psi saturated steam, the valve operates continuously from minus 20 degrees F up to 406 degrees F. PTFE seals and a bronze seat maintain tight shut-off across that range.

Upgrade Context

This unit replaces a worn or missing check valve where a 54 gpm flow capacity and a cracking pressure between .750 and 1.000 psi are required. It is not suited for systems that demand a lower cracking pressure or a higher flow rating than specified.

Highlights

  • Bronze body resists corrosion for long service life
  • PTFE seal handles 406 °F for high-temperature systems
  • 300 psi water rating supports demanding pressure lines
  • 54 gpm flow capacity keeps circuits running efficiently
  • Installs horizontally or vertically for flexible piping

Specifications

BrandMILWAUKEE VALVE
Size1 1/4"
TypeOther

Questions about this item

How do I install the 1 1/4" FNPT swing check valve and what orientation mistake should I avoid?

Thread the FNPT ends into the pipe using sealant on male threads only. The valve works in horizontal or vertical flow-up orientation; do not install it with flow running downward or the disc will not close.

Which part will need replacement first and what wear signs should I watch for?

The PTFE seal and bronze seat wear over time. Listen for chatter or see reverse leakage during low-flow conditions; that indicates the disc is no longer sealing against the seat.

At what pressure does the valve hit its limit during sustained hot-water service?

The bronze body is rated for 300 psi at 150 °F water. Continuous operation above that pressure or above 406 °F exceeds the design limit and can deform the seat.

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