1/2-3/4, 1-2, 2 – 3
Plast-o-matic® type VB, VBM and VBS Self-Closing Vacuum Breakers protect against hazards, damage and financial losses caused by vacuum. They are designed to protect enclosed tanks from collapse or structural damage during draining. Their patented diaphragm design assures dependable, repetitive, bubble-tight sealing in VBM and VB, and the PFA encapsulated spring and special poppet provides identical performance in the VBS design.
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