หมวดหมู่ : PIPE , FITTING & VALVES ,  PLAST-O-MATIC ,  Venting Valves & Vacuum Breakers ,
Features/Benefits with Proper Installation:
• 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... 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: 1/2", 3/4", 1", 11/2", 2" and 3".