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Vacuum Breakers

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Vacuum breakers are used in high-hazard applications where backsiphoning could result in harmful health hazards contaminating the water supply. They have an air inlet that allows air into the system, breaks the vacuum, and prevents backward siphoning into potable water supplies.
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Atmospheric Vacuum Breakers

Atmospheric Vacuum Breakers
Atmospheric vacuum breakers (AVBs) prevent backsiphoning of contaminated water into potable water supplies if a pressure loss creates vacuum conditions. Also called anti-siphon vacuum breakers, they have an atmospheric vent that allows air to enter the valve and prevents a siphon from forming during periods of low or no demand. A seal is engaged to close the vent when water is flowing. They are not for use in continuous pressure applications.

APOLLO 38-100

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APOLLO 38-200

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APOLLO 38LF-100

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WATTS 188A

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WATTS LF288A

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WATTS LF289

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WATTS LFN388

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ZURN WILKINS 35XL

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Freeze-Relief Valves for Vacuum Breakers & Backflow Preventers

Freeze-Relief Valves for Vacuum Breakers & Backflow Preventers
Freeze-relief valves install on backflow preventers and vacuum breakers to prevent damage to plumbing systems from sudden or unexpected freezes. They are ideal for geographical areas where systems are not typically winterized, but uncommon freezing temperatures may occur.

ZURN WILKINS ZWFR

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Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order.