Vacuum-Breaking Valves | McMaster-Carr

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Body Material

Stainless Steel

Pipe Size

For Use With

Methyl Ethyl Ketone (MEK)

Mineral Spirits

Thread Type

Gender

Material

Stainless Steel

Fitting Connection

Maximum Temperature

Operation Type

Maximum Pressure @ Temperature

125 psi @ 70° F

300 psi @ 70° F

1,500 psi @ 70° F

100 psi @ 75° F

85 psi @ 140° F

Fitting Type

Shape

Mounting Position

Connects To

Valve Type

For Manufacturer

American Standard

Inlet Pipe Size

Component

1 1/2 Pipe Size Spud Coupling Assembly

1 1/2 Pipe Size × 13 1/2" Lg. Vacuum Breaker and Pipe

1 1/2 Pipe Size × 21 1/2" Lg. Vacuum Breaker and Pipe

1 1/2 Pipe Size × 24 1/2" Lg. Vacuum Breaker and Pipe

1 1/2 Pipe Size × 24" Lg. Vacuum Breaker and Pipe

1 1/2 Pipe Size × 3" Lg. Vacuum Breaker and Pipe

1 1/2 Pipe Size × 8 1/2" Lg. Vacuum Breaker and Pipe

1 1/2 Pipe Size × 9" Lg. Vacuum Breaker and Pipe

1 1/2" Coupling Assembly

1 1/2" Spud Coupling Assembly

1 1/4 Pipe Size Spud Coupling Assembly

1 1/4 Pipe Size × 8 1/2" Lg. Vacuum Breaker and Pipe

1 1/4 Pipe Size × 9" Lg. Vacuum Breaker and Pipe

3/4 Pipe Size Spud Coupling Assembly

3/4 Pipe Size × 15" Lg. Vacuum Breaker and Pipe

3/4 Pipe Size × 24" Lg. Vacuum Breaker and Pipe

3/4 Pipe Size × 8 1/2" Lg. Vacuum Breaker and Pipe

3/4 Pipe Size × 9" Lg. Vacuum Breaker and Pipe

Flow Coefficient (Cv)

REACH

RoHS

Compliant with Exemptions

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Water per Flush

Check Valve Type

Spring-Loaded Piston

How can we improve?

122 Products

Vacuum Breakers

Vacuum Breakers

Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

High-Pressure Vacuum Breakers

High-Pressure Vacuum Breakers

Rated for 12 times the pressure of standard vacuum-breaking valves

Vacuum Breakers for Chemicals

Vacuum Breakers for Chemicals

Plastic body withstands exposure to harsh chemicals

Freeze-Resistant Vacuum Breakers with Garden-Hose Threads

Freeze-Resistant Vacuum Breakers with Garden-Hose Threads

Valve drains when closed to prevent your garden hose line from freezing

Vacuum Breakers with Garden-Hose Fittings

Vacuum Breakers with Garden-Hose Fittings

Prevent dirty, contaminated water from backing up into your garden hose line

Other Products

Air Admittance Valves

Air Admittance Valves

Allow air into drain, waste, and vent systems so you don't have to vent plumbing to the outdoors

Flush Valve Replacement Parts

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

Drum Pumps

Draw liquids out of drums, pails, and other small containers

Urinal Flush Valves

Urinal Flush Valves

Release water from a plumbing line into the urinal bowl

Garden Hose Faucets

Garden Hose Faucets

Connect garden hose to lines coming from a building or the ground

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)