MILWAUKEE VALVE 509Y 1 1/4" 1-1/4" FNPT Bronze Swing Y Check Valve

The MILWAUKEE VALVE 509Y 1-1/4 in. FNPT bronze swing Y check valve is intended for one-way flow and backflow control applications in gas, oil, steam, and water lines. It features a Y-style body with a swing check mechanism, full-flow style, and female NPT connections on both ends. This valve is rated for horizontal or vertical mounting and has a 0.5 psi cracking pressure.

Key Features:

• Valve type: Swing Y check valve with Y-pattern body and swing mechanism
• Body material: Bronze with cast bronze body construction
• Connection size: 1-1/4 in. on both ends
• Connection type: FNPT x FNPT with female NPT connections
• Media compatibility: Gas, oil, steam, and water
• Flow rating: 54 gpm with Cv of 39
• Pressure ratings: 200 psi WOG, 200 psi maximum operating pressure, and 125 psi WSP maximum steam pressure
• Temperature range: -20 degrees F to 425 degrees F
• Seat and seal material: Bronze
• Check mechanism material: Brass
• Mounting orientation: Horizontal or vertical
• Overall dimensions: 4-3/8 in. L x 3-3/4 in. H x 1-1/2 in. W
• Standards: ASTM B16, ASTM B505, ASTM B584, MSS SP-80

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