3/4" FNPT Bronze Swing Y Check Valve MPN:509Y 3/4"

Discount: See in Cart
Free Shipping
In Stock
Brand: Milwaukee
Part #: 509Y 3/4"
UPC: 697988642423
SKU
510-G3974047
Regular Price $129.49 Special Price $92.49

BBB Accredited - ResellerRatings Elite Member - SBA Service-Disabled Veteran-Owned Certified

3/4" FNPT Bronze Swing Y Check Valve

The Milwaukee 3/4in FNPT Bronze Swing Y Check Valve is a reliable and efficient solution for various applications. Suitable for use in both horizontal and vertical positions, this valve ensures a smooth flow of liquids while preventing backflow. Its bronze construction and 0.5 psi cracking pressure make it ideal for water and steam systems. With a maximum temperature of 425°F and a maximum water pressure of 200 psi, this valve can handle demanding applications. Its compact size and lightweight design make it easy to install and maintain, making it a great choice for industrial, commercial, and residential use.

Top product features:

  • It has a single flow design for efficient fluid passage.
  • The Y swing mechanism allows for easy installation and maintenance.
  • It is made of bronze, a material resistant to corrosion and wear.

Top product applications:

  • High-pressure steam distribution systems
  • Industrial process control systems
  • Pulp and paper mill processing systems

The MILWAUKEE VALVE 509Y 3/4 in. FNPT bronze swing Y check valve is a one-way valve with a Y-style body and swing check mechanism for one-way flow applications in piping systems. It is compatible with gas, oil, steam, and water within the specified pressure and temperature ratings. Full flow: Yes. The valve has a 0.5 psi cracking pressure and a rated flow of 18 gpm.

Key Features:

  • 3/4 in. nominal valve size with FNPT x FNPT female threaded connections
  • Cast bronze body with bronze seat and seal and a brass check mechanism
  • Swing Y design with single-flow configuration
  • Compatible media: gas, oil, steam, water
  • 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
  • Cv: 13
  • Overall dimensions: 3 in. length, 2-3/8 in. overall height, 1 in. width
  • 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: 3.10
  • Package Width: 2.80
  • Package Height: 1.90
  • Package Weight: 1.25
Product info last updated on February 27, 2026 9:29am UTC Category: Pipes, Valves and Fittings
Copyright © 2026 Veratics, Inc dba GoVets.
In stock