2-1/2" FNPT Bronze Swing Y Check Valve MPN:509Y 2 1/2"

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Brand: Milwaukee
Part #: 509Y 2 1/2"
UPC: 697988642478
SKU
510-G4098157
Regular Price $914.89 Special Price $653.49

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2-1/2" FNPT Bronze Swing Y Check Valve

MILWAUKEE VALVE 509Y is a 2-1/2 in. bronze swing Y check valve with FNPT x FNPT connections. It uses a swing check mechanism in a Y-style body for one-way flow applications and backflow reduction in general-purpose piping systems handling gas, oil, steam, and water. The valve features a full-flow design, a 0.5 psi cracking pressure, and can be mounted horizontally or vertically.

Key Features:

  • 2-1/2 in. nominal valve size with 2-1/2 in. female NPT connections on both ends
  • Bronze body with bronze check mechanism, seat, and seal materials
  • Y-pattern swing check design with single-flow configuration
  • Flow rating: 192 gpm
  • Cv rating: 150
  • Maximum water pressure: 200 psi at 150 degrees F
  • Maximum steam pressure: 125 psi WSP
  • Operating temperature range: -20 degrees F to 425 degrees F
  • Mounting orientation: horizontal or vertical
  • Overall dimensions: 6 in. L x 6-1/4 in. H x 3-1/4 in. W
  • Standards: ASTM B16, ASTM B505, ASTM B584, MSS SP-80

Additional Information

  • Country of Origin: US
  • Drop Ship Item: No
  • Blind Ship Eligible: No
  • LTL Freight Required: No
  • Lead Time: Ships in 1 days
  • Minimum Order Quantity: 1
  • Unit of Measure: EA
  • Package Length: 7.10
  • Package Width: 6.80
  • Package Height: 4.20
  • Package Weight: 10.65
Product info last updated on February 7, 2026 12:11am UTC Category: Pipes, Valves and Fittings
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