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Bronze Y-pattern swing check valve with threaded FNPT ends

Milwaukee Valve

Milwaukee Valve 507 1 1/4" FNPT Bronze Swing Y Check Valve

SKU CH-9GM5-XA5MF

Bronze Y-pattern check valve with 1 1/4" FNPT ends, 0.750–1.000 psi cracking pressure, rated 600 psi at 150 °F

  • Size1 1/4 in
  • Bronze body resists corrosion up to 550 °F
  • Y-swing design allows horizontal or vertical mounting
  • FNPT x FNPT threads simplify pipe connections
  • Cracking pressure .750 to 1.000 psi ensures reliable flow control
  • Rated 600 psi at 150 °F for demanding water systems

Milwaukee Valve 507 Bronze Swing Y Check Valve

This Milwaukee Valve 507 check valve uses a bronze body with a Y-pattern swing mechanism to stop reverse flow in piping systems. It accepts 1 1/4 inch FNPT connections on both ends and suits horizontal or vertical mounting. The unit handles water pressure up to 600 psi at 150 degrees Fahrenheit and operates between -20 and 550 degrees Fahrenheit.

Chrome-cobalt seal and 0.750 to 1.000 psi cracking

The chrome-cobalt seal material resists wear across the stated temperature range. A low cracking pressure between 0.750 and 1.000 psi lets flow start with minimal head loss, which helps gravity-fed or low-pressure circuits. The Y swing layout reduces turbulence compared with straight-pattern designs, supporting steadier flow in hydronic heating, cooling or plumbing loops.

Verify pipe size, thread type

Confirm that your piping uses 1 1/4 inch FNPT threads so the valve seals without adapters. Check that system pressure and temperature stay within the 600 psi at 150 degrees Fahrenheit limit and the -20 to 550 degrees Fahrenheit range. Ensure the installation orientation matches horizontal or vertical mounting requirements and that the low cracking pressure suits the available differential head.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $159.99
Pricier than about 83% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameMILWAUKEE VALVE
Product typeOther
Size & build
Size1 1/4 in

Questions about this item

How often will the bronze body and chrome-cobalt seal need replacement in a typical plumbing system?

Bronze construction and chrome-cobalt sealing surfaces are designed for long service life; no scheduled replacement interval is defined by the manufacturer.

What pressure limit is reached first during continuous operation at elevated temperature?

The valve is rated for a maximum of 600 psi at 150 degrees F, which is the limiting pressure-temperature combination for sustained use.

Does the swing mechanism generate noticeable noise or heat when the valve runs all day?

The passive swing check has no moving parts under power, so it produces no operational noise or heat beyond normal fluid flow.

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