PLASTOMATIC VACUUM RELIEF VALVES
Compact, self-closing Vacuum Breakers protect tanks and piping systems against hazards, damage and financial losses caused by vacuum. The VB Vacuum Relief Valve available in PVC and PP feature the same sensitive diaphragm design as the Non-Return Valves allowing them to respond to a minimum of vacuum approximately 2"Hg (6.8kpa).The Plast-O-Matic Series VB and VBM Vacuum Breakers have only one moving part - the patented self-sealing diaphragm, and this provides both design simplicity and maximum operating dependability. This normally-closed design seals in the identical location every time producing a very dependable, long-life seal.
Materials of construction: Series VB is available in PTFE in sizes ¾" and 1". Diaphragms are of EPDM or FKM (Viton). Fasteners used on PTFE Series VB are stainless steel and are NOT in contact with process liquid.
Key VB Series Vacuum Relief Valve 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".
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