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Bronze inline swing check valve with sweat connections, 1/2 inch size

Milwaukee Valve

Milwaukee Valve 1509 1/2" Swing Check Valve 2.5625 in

SKU CH-YE29-FZ35P

Inline swing check valve with bronze body and sweat connections, rated for 200 psi water pressure and temperatures from -20 to 406 °F

  • Size1/2"
  • TypeOther
  • Prevents backflow with inline swing mechanism
  • Bronze body withstands 200 psi water pressure at 150°F
  • Operates from -20°F to 406°F temperature range
  • Sweat connections fit 1/2 inch copper tubing
  • Opens at low 0.500 to 0.750 psi cracking pressure

Half-inch bronze check valve

This Milwaukee Valve 1509 is a 1/2-inch inline swing check valve with sweat-to-sweat connections and a bronze body. It is designed for plumbing systems that need automatic backflow prevention in a compact, corrosion-resistant package. The valve operates horizontally and handles water, steam or compatible fluids within its rated temperature and pressure limits.

Replaces missing or failed backflow protection

Install this valve when a line lacks a check mechanism or when an existing unit no longer seals reliably. The low cracking pressure of .500 to .750 psi means it opens with minimal flow, making the upgrade worthwhile for gravity-fed or low-head circuits. It is not suited for vertical risers or applications that demand a spring-loaded or silent closing action.

Rated for 10 gpm at 200 psi water and 125 psi steam

The bronze seat and body withstand continuous water pressure of 200 psi at 150 degrees F and steam pressure of 125 psi WSP, with a temperature range of -20 to 406 degrees F. Flow capacity reaches 10 gpm, so the valve handles typical residential branch lines comfortably. It runs out of headroom on high-volume mains or systems that exceed the stated pressure and temperature ceilings.

Highlights

  • Prevents backflow with inline swing mechanism
  • Bronze body withstands 200 psi water pressure at 150°F
  • Operates from -20°F to 406°F temperature range
  • Sweat connections fit 1/2 inch copper tubing
  • Opens at low 0.500 to 0.750 psi cracking pressure

Specifications

BrandMILWAUKEE VALVE
Size1/2"
TypeOther

Questions about this item

Will the 2.5625 in overall length fit between my 1/2 in sweat copper lines?

Yes, the valve body measures 2.5625 in end-to-end and uses 1/2 in sweat connections on both ends for direct copper-to-copper soldering.

What is the correct way to orient the valve during soldering, and what mistake should I avoid?

Install with the flow arrow pointing horizontally; the common error is mounting it vertically, which prevents the swing disc from sealing properly.

How often should I check the bronze seat and disc for wear in a 10 gpm hot-water loop?

Inspect the bronze seat and disc annually; mineral build-up at 406 °F max temperature can reduce the 0.500 to 0.750 psi cracking pressure over time.

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