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Small bronze inline swing check valve with threaded ends, 2.125 inches long

Milwaukee Valve

Milwaukee Valve 509 1/4" Swing Check Valve 2.125 in

SKU CH-HPFE-W605J

Inline swing check valve with bronze body and brass seat, rated 200 psi at 150 °F and 125 psi steam, 3.3 gpm flow, 0.750–1.000 psi cracking pressure, operates –20 °F to 406 °F

  • Size1/4 in
  • Reliable flow control with 3.3 gpm capacity
  • Durable bronze body withstands 406 °F maximum temperature
  • Operates in freezing conditions down to -20 °F
  • Handles 200 psi water pressure at 150 °F
  • Suitable for horizontal or vertical mounting orientation

Quarter-Inch Swing Check Valve

The Milwaukee Valve 509 is a quarter-inch swing check valve designed for plumbing and light industrial systems that need automatic backflow prevention. Its inline swing mechanism allows fluid to move in one direction while closing under reverse pressure without external power.

Bronze Body with FNPT Connections

The valve body and seal are bronze with a brass seat, rated for a maximum water pressure of 200 psi at 150 degrees F and a steam pressure of 125 psi WSP. FNPT x FNPT threads accept standard quarter-inch pipe, and the unit mounts in either horizontal or vertical orientation for flexible routing.

Replaces Missing or Worn Check Valves

Install this unit where a check valve has failed or was omitted from the original design, restoring one-way flow control at a cracking pressure of 0.750 to 1.000 psi. The jump is worth it when system pressure stays within the 200 psi water rating and operating temperatures remain between -20 and 406 degrees F.

How it compares

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

Price $36.99
Typical for this category: the median of 1,499 items is $39.99.

Specifications

Product
Brand nameMILWAUKEE VALVE
Product typeOther
Size & build
Size1/4 in

Questions about this item

What pressure does the 1/4" FNPT swing check valve start to open at?

The valve cracks open between 0.750 and 1.000 psi, allowing flow in one direction only.

What piping and orientation does the 2.125 in bronze body require?

It fits 1/4" female NPT threads and mounts horizontally or vertically with flow upward.

How do you install the 509 model so the disc swings freely?

Thread it onto the pipe with flow direction matching the body arrow; keep debris out of the seat.

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