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Venting Valves & Vacuum Breakers

Air Release Valves provide high capacity venting of gas at system start up, while Degassing Valves vent trace amounts of gas as it occurs during system operation. Vacuum Breakers open automatically in response to minimal vacuum to prevent unwanted siphonage or collapse of storage tanks. Plast-O-Matic degassing vent & vacuum breaker valves automatically seal bubble tight when not in use; air release & degassing valves automatically reseal when liquid fills the valve.

Venting Valves & Vacuum Breakers

Air Release Valves provide high capacity venting of gas at system start up, while Degassing Valves vent trace amounts of gas as it occurs during system operation. Vacuum Breakers open automatically in response to minimal vacuum to prevent unwanted siphonage or collapse of storage tanks. Plast-O-Matic degassing vent & vacuum breaker valves automatically seal bubble tight when not in use; air release & degassing valves automatically reseal when liquid fills the valve.

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arvdgvgroup270

Air Release & Degassing Valves

Series ARV designed to expel large volume of air at system start up, then close bubble tight. Unique self-guided poppet seals more reliably than ball designs; does not deform under pressure and assures minimal emission of system liquid prior to sealing. Sizes from 1/2″ to 4″ in a wide range of materials and connection types.

Series DGV United States Patent #7,481,238 B2. Unique float design opens as air or gas collects in the valve, closes when liquid returns, allowing continuous expulsion of trace amounts of gas as it occurs. 1/2″ tee connection for virtually any pipe size; offered in a variety of corrosion resistant and ultrapure plastic materials.

Series CARD Combination Air Release and Degassing Valve in a single unit. Also provides Vacuum Relief Valve function, which prevents pipeline vacuum in case of leaks or siphon. Connections from 1″ – 4″ in a variety of materials; sizing is based on air volume requirements.

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vbgroup270

Vacuum Breakers

Series VB/VBM Patented diaphragm design assures dependable, repetitive, bubble-tight sealing to protect enclosed tanks from collapse or structural damage during draining. Also eliminates siphoning of dangerous fluids,and prevents vacuum damage to sensitive instruments and filters. 1/2″, 3/4″ and 1″ in a wide range of materials and connection types.

Series VBS PFA encapsulated spring and special poppet provide performance identical to VB/VBM with same protection for tanks and piping systems against hazards, damage and financial losses caused by unwanted vacuum conditions. 1-1/2″ to 4″ sizes in a wide range of materials and connection types.

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Product Data Sheet Product Data Sheet 3 & 4 inch Dimensional Drawing Installation & Maintenance Instructions