PLASTOMATIC VACUUM RELIEF VALVES Vacuum Breakers
VBS Series
Product Description:Compact, Self-Closing Vacuum Breakers Protect Tanks and Piping Systems Against Hazards, Damage and Financial Losses Caused by Vacuum.
These Vacuum Breakers feature a patented, normally-closed, design that can be mounted in any position; however, upright is recommended. For enclosed tank applications, mounting should be at the highest point of the tank.
VBS Series Vacuum Breakers feature a corrosion resistant PFA encapsulated spring which acts on a poppet seal that neither sticks nor chatters. Maximum working pressure is 100 PSI @ 75°F (6,9 bar @ 24°C).
Materials of Construction: VBS Vacuum Breakers are available in Geon® PVC, Natural Polypropylene, Corzan® CPVC and Kynar® PVDF in sizes 1½", 2", and 3". Standard dust caps on PVDF models are natural polypropylene; PVDF dust cap is optional. Series VBS Seals are EPDM or FKM.
No fasteners are used on Series VBS. The self-guided spring is completely encapsulated (not coated) with PFA. The encapsulation is not "adehered" to the spring. It flexes independently of the spring and does not crack or flake the way coatings can. This encapsulation has been tested for over 1,000,000 cycles in laboratory conditions with no ill effects.
VBS Series Key features:
- Designed to protect enclosed tanks from collapse or structural damage during draining
- Eliminates siphoning of dangerous fluids
- Prevents vacuum which can cause damage to sensitive instruments and filters
- Normally-closed design prevents fugitive emissions from leaving system
- Insurance against replacement of damaged expensive equipment and avoids critical system downtime
- Patented diaphragm design assures dependable, repetitive, bubble-tight sealing in VBM and VB; PFA encapsulated spring and special poppet provide identical performance in VBS design
- For corrosive or ultra-pure liquid applications
- Sizes: ½", ¾", 1", 1½", 2" and 3"
