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