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Vacuum Breakers
Straight
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Straights are often used with steam coils, heat exchangers, and space heaters.
303 Stainless Steel Body—303 stainless steel valves have the best corrosion resistance.
303 Stainless Steel Body | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Inlet Pipe Size | Outlet Pipe SIze | Max. Pressure @ Temp. | Temp. Range, ° F | End-to-End Lg. | Seal Material | For Use With | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
NPT Male Inlet × NPT Female Outlet | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/2 | 3/8 | 300 psi @ 70° F | -20 to 365 | 1 3/4" | EPM Rubber | Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon | 0000000 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/4 | 1/2 | 300 psi @ 70° F | -20 to 365 | 2 1/8" | EPM Rubber | Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 | 3/4 | 300 psi @ 70° F | -20 to 365 | 2 3/8" | EPM Rubber | Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
High-Pressure Vacuum Breakers
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Rated for 12 times the pressure of standard vacuum-breaking valves, these can handle up to 1,500 psi. Also known as vacuum-breaking valves, they have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping. Body is 316 stainless steel for excellent corrosion resistance.
Flow Coefficient (Cv)—Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
316 Stainless Steel Body | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Inlet Pipe Size | Outlet Pipe SIze | Flow Coefficient (Cv) | Max. Pressure @ Temp. | End-to-End Lg. | Specs. Met | Seal Material | For Use With | Temp. Range, ° F | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
NPT Female Inlet × NPT Male Outlet | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/2 | 3/4 | 4.6 | 1,500 psi @ 70° F | 1 5/16" | ASME B1.20.1 | Fluoroelastomer | Air, Argon, Helium, Krypton, Neon, Oil, Water, Xenon | -10 to 400 | 0000000 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/4 | 1 | 6.6 | 1,500 psi @ 70° F | 1 7/8" | ASME B1.20.1 | Fluoroelastomer | Air, Argon, Helium, Krypton, Neon, Oil, Water, Xenon | -10 to 400 | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
