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Bronze Y-pattern swing check valve with FNPT ends

Milwaukee Valve

Milwaukee Valve 509Y 1 1/2" FNPT Bronze Swing Y Check Valve

SKU CH-XXRT-AM95Y

Bronze Y-pattern swing check valve with 1/2" FNPT connections, .5 psi cracking pressure, 76 gpm flow capacity, rated to 200 psi at 150°F water and 125 psi steam, operating from -20°F to 425°F

  • Size1 1/2"
  • TypeOther
  • Bronze body handles water up to 200 psi at 150 °F
  • Bronze construction withstands steam pressure up to 125 psi WSP
  • Operates reliably from -20 °F to 425 °F
  • Y-swing design allows full flow with 76 gpm capacity
  • Low 0.5 psi cracking pressure opens easily in any orientation

Bronze Y Swing Check Valve

The Milwaukee Valve 509Y is a 1-1/2 inch FNPT bronze swing check valve with a Y-pattern body. It allows full flow in horizontal or vertical mounting orientations. The valve handles water pressure up to 200 psi at 150 degrees Fahrenheit and steam pressure up to 125 psi WSP. Operating temperatures range from -20 to 425 degrees Fahrenheit.

Suited for bronze-compatible piping

This valve suits installations requiring a bronze seat and seal with a low cracking pressure of 0.5 psi. It delivers a flow capacity of 76 gpm for water systems. Buyers needing a different connection type, a higher pressure rating, or a non-bronze seat material should look at alternative valve designs.

Verify piping and media compatibility

Confirm the existing piping uses 1-1/2 inch FNPT threads before ordering. Ensure the system pressure and temperature stay within the rated limits for water or steam service. Check that the bronze body and seat are compatible with the specific fluid media in the application.

Highlights

  • Bronze body handles water up to 200 psi at 150 °F
  • Bronze construction withstands steam pressure up to 125 psi WSP
  • Operates reliably from -20 °F to 425 °F
  • Y-swing design allows full flow with 76 gpm capacity
  • Low 0.5 psi cracking pressure opens easily in any orientation

Specifications

BrandMILWAUKEE VALVE
Size1 1/2"
TypeOther

Questions about this item

What pipe size and thread type must my plumbing have to connect this 509Y valve?

The valve uses 1 1/2 inch FNPT connections on both ends, so your piping needs matching female National Pipe Taper threads.

Will the bronze seat and 0.5 psi cracking pressure work with my existing low-pressure gravity-fed system?

Yes, the bronze seat and .5 psi cracking pressure allow flow with very little head pressure, suitable for gravity-fed lines.

How can I verify the valve is sealing properly after installation?

Pressurise the line up to 200 psi at 150 degrees F; no leakage past the swing disc confirms the bronze seat is sealing.

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