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VB Series Vacuum Breakers
Product Description

VB Series vacuum breakers are available in PVC with an FPM membrane and threaded end connection only. Mounts into the 1-1/2 in. socket BF, BFA or BFAS Series bulkhead fitting or directly to 3/4 in. pipe. All valves are assembled with silicone free lubricant.

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  • Reliable Venting of Tanks and Piping Systems
  • Eliminates Siphoning
  • Advanced Design for Fast Draining
  • Easy Installation
  • Compact
  • No Metal Parts to Stick or Jam
  • Normally Closed; Automatically opens when draining
  • Maximum Drain Rate 300 GPM


  • Mount to 3/4 in. threaded pipe
  • Use with 1-1/2 in. BFA/BFAS bulkhead fitting


  • Use with bulkhead fitting to attach to tank for easier draining
  • 3/4 in. threaded to attach directly to pipe for draining process pipe lines




BFA Series Bulkhead Fittings

1/2 in.- 6 in. PVC, CPVC & PP, Long Pattern 1/2 in.- 1 in. PVC, CPVC & PP, Large Flange

BFAS Series Bulkhead Fittings

1/2 in. - 4 in. PVC, CPVC & PP, Short Pattern