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Milwaukee Valve
Milwaukee Valve 509 3/4 Swing Check Valve 2.625 in
A 3/4-inch inline swing check valve with bronze body and brass seat, rated for 200 psi water pressure at 150°F and 125 psi steam, operating from -20°F to 406°F with 18 gpm flow
- Size3/4"
- TypeOther
- Inline swing design allows horizontal or vertical mounting
- Bronze body and seat handle water up to 200 psi at 150 °F
- Brass seat resists corrosion for long service life
- 18 gpm flow capacity meets residential demand
- Operates from -20 °F to 406 °F for versatile installations
3/4" Bronze Swing Check Valve
The Milwaukee Valve 509 is a 3/4-inch inline swing check valve with FNPT connections. It uses a bronze body and brass seat to prevent backflow in water and steam lines. The unit measures 2.625 inches in overall length. It suits residential and light-commercial plumbing installations.
Pressure and Temperature Limits
The valve handles a maximum water pressure of 200 psi at 150 degrees F and a maximum steam pressure of 125 psi WSP. Operating temperatures range from -20 degrees F to 406 degrees F. A low cracking pressure between .750 and 1.000 psi allows the disc to open with minimal flow. It mounts in horizontal or vertical orientations.
Replaces Worn Bronze Check Valves
This valve replaces an existing 3/4-inch bronze swing check that leaks, chatters or fails to seal. The upgrade is worth it when the old seat is eroded or the hinge pin is corroded. It is not for systems requiring a spring-loaded silent check or a higher flow coefficient than 18 gpm.
Highlights
- Inline swing design allows horizontal or vertical mounting
- Bronze body and seat handle water up to 200 psi at 150 °F
- Brass seat resists corrosion for long service life
- 18 gpm flow capacity meets residential demand
- Operates from -20 °F to 406 °F for versatile installations
Specifications
| Brand | MILWAUKEE VALVE |
|---|---|
| Size | 3/4" |
| Type | Other |
Questions about this item
Should I choose the 3/4 inch FNPT version or a different size for my piping?
This valve is supplied in a 3/4 inch size with FNPT x FNPT connections. Match it to 3/4 inch NPT pipe threads; other sizes are separate listings.
What does the 18 gpm flow rating mean when the valve is installed in my system?
The 18 gpm figure is the valve's flow capacity. Actual flow depends on your pump curve, pipe friction and pressure differential across the valve.
How do the 200 psi water and 125 psi steam pressure limits affect what I can run through this valve?
The bronze body is rated for 200 psi water at 150 °F and 125 psi saturated steam. Do not exceed either limit for the corresponding fluid and temperature.
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