Durabla Vacuum Breakers In Stock

Manufacturer:
Durabla
Description:

DFT Durabla Vacuum Breakers provide effective protection
against collapse of pressure vessels, tanks and rolls.
They Prefent condensate "back-up" when equipment is
shut down or inlet steam is reduced by modulating    
control valves.  In piping systems, DFT Durabla Vacuum Breakers
are used to break siphons, prevent pipe collapse during
transient pressure drops, and to provide addition of air 
on the downstream side of check valves to dampen
water hammer.

 

Features:

  • 1" - 4" Size
  • 450 - 600 CWP
  • Threaded O.D. (MNPT)
  • Unthreaded Inlet Bore
  • Stainless Steel Construction
  • Spring-assisted Silent Closing
  • Horizontal or Vertical Installation
  • Tight Shut-Off
  • Soft Seat Option
  • Easy Maintenance
  • Versatile

Item Name: DFT Vacuum Breakers
Description:

Cracking pressure for vertical flow will be slightly different: upward flow, slightly higher; downward flow, slightly less.  

*(1) - Light spring available: Cracking Pressure = .18 PSI (5.0 inches of water)

*(2) 0.24 PSI Crack Pressure Spring (+/- 10%)

Lead Time: Most sizes IN STOCK at factory. Ready for quick-ship.
Specifications
Vacuum breaker size Size Cold, non-slock preassure rating (2) Product Number Price  
BSSV 1" 2500 8033 $62.50 RFQ
BSSV 1" 2500 8103 (Light Spring)(1) $62.50 RFQ
BSSV 1-1/2" 2000 8034 $108.50 RFQ
BSSV 2" 1500 8035 $132.50 RFQ
BSSV 2-1/2" 850 8036 $178.50 RFQ
BSSV 3" 700 8037 $248.50 RFQ
BSSV 4" 450 8038 $385.50 RFQ
BSSV6 1 6000 8094 $98.50 RFQ
BSSV6 1-1/2 5500 8095 $127.50 RFQ
BSSV6 2 3000 8096 $171.50 RFQ
BSSV6 2-1/2 1100 8097 $230.50 RFQ
BSSV6 3 900 8098 $283.50 RFQ
BSSV6 4 450 8099 $437.50 RFQ
Technical Information
Durabla Vacuum BreakerNominal Size(MNPT)A Durabla Vacuum BreakerUnthreadedInlet BoreB CV Friction Loss(Feet of Pipe) Valve Cracking Pressure* (PSI) Valve Cracking Pressure* (Inches of Water) Approx.Net WT.Each (In lbs.) Weight, lbs.  
1" 9/16" 5.8 7 0.60(1) 16.7 0.38 0.38 RFQ
1-1/2" 7/8" 13.2 6 0.45 12.5 0.88 0.88 RFQ
2" 1-3/32" 23.1 7 0.38 10.5 1.25 1.25 RFQ
2-1/2" 1-1/2" 36 12.5 0.20 5.5 2.25 2.25 RFQ
3" 1-23/32" 57.4 11 0.14 3.9 3.75 3.75 RFQ
4" 2-7/32" 90 16 0.15 4.3 7.00 7.00 RFQ
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