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Bronze Y-pattern swing check valve with threaded ends, 2.625 inches long

Milwaukee Valve

Milwaukee Valve 509Y 1/2" Swing Y Check Valve 2.625 in

SKU CH-X5H7-1QSMQ

A bronze Y-pattern swing check valve with 1/2 in FNPT connections, 0.5 psi cracking pressure and 10 gpm full flow for horizontal or vertical mounting up to 425 °F and 200 psi

  • Size1/2 in
  • Prevents backflow with a Y-pattern swing mechanism
  • Handles water up to 200 psi at 150 degrees F
  • Operates in steam lines up to 125 psi WSP
  • Functions from -20 to 425 degrees F
  • Delivers full 10 gpm flow through 1/2 inch FNPT connections

1/2-inch Bronze Swing Check Valve

This 1/2-inch bronze swing check valve uses a Y-pattern body with FNPT connections. It is designed for plumbing systems that need automatic backflow prevention in horizontal or vertical runs. The bronze body and seat handle water up to 200 psi at 150 degrees F and steam up to 125 psi WSP.

Cracking pressure and orientation limits

The valve opens at a low .5 psi cracking pressure and supports full flow at 10 gpm. It mounts in horizontal or vertical orientations but cannot be used where cracking pressure must exceed .5 psi. Temperature range spans -20 to 425 degrees F, limiting use in extreme cryogenic or superheated steam service beyond those bounds.

2.625-inch overall length constraint

The fixed 2.625-inch overall length determines whether this valve fits between existing pipe fittings. Installers must verify that spacing before purchase because the dimension cannot be adjusted. Systems needing a different face-to-face measurement require an alternative valve body.

How it compares

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

Price $43.99
Typical for this category: the median of 1,499 items is $39.99.

Specifications

Product
Brand nameMILWAUKEE VALVE
Product typeOther
Size & build
Size1/2 in

Questions about this item

Should I pick the 1/2" size or a different diameter for my plumbing?

This valve is built for 1/2 inch FNPT connections and delivers up to 10 gpm; match it to the pipe size already in your system.

What does the 200 psi rating mean when the valve is installed?

At 150 °F water the valve holds 200 psi; at 425 °F the steam limit drops to 125 psi WSP.

How does the FNPT x FNPT connection affect the install?

Both ends are female NPT threads, so you thread male pipe or adapters directly into each side without extra fittings.

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