DFT Durabla Vacuum Breakers provide effective protection against collapse of pressure vessels, tanks and rolls. They prevent 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
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%)
| Part # | Durabla Model | Size |
Nominal Size (MNPT) A |
Unthreaded Inlet Bore B |
Price | Qty | |
|---|---|---|---|---|---|---|---|
| 8033 | BSSV | 1" | 1" | .56" (14mm) | $105.00 | Add to Cart | |
| 8103 | BSSV | 1" | 1" | .56" (14mm) | |||
| 8034 | BSSV | 1-1/2" | 1-1/2" | .88 (22mm) | $181.25 | Add to Cart | |
| 8035 | BSSV | 2" | 2" | 1.09" (28mm) | $218.75 | Add to Cart | |
| 8036 | BSSV | 2-1/2" | 2-1/2" | 1-1/2" (38mm) | $295.00 | Add to Cart | |
| 8037 | BSSV | 3" | 3" | 1.72" (44 mm) | $407.50 | Add to Cart | |
| 8038 | BSSV | 4" | 4" | 2.22" (56 mm) | $632.50 | Add to Cart | |
| 8094 | BSSV6 | 1 | 1" | 0.56" (14 mm) | |||
| 8095 | BSSV6 | 1-1/2 | 1-1/2" | 0.88" (22 mm) | |||
| 8096 | BSSV6 | 2 | 2" | 1.09" (28 mm) | |||
| 8097 | BSSV6 | 2-1/2 | 2-1/2" | 1-1/2" (38 mm) | |||
| 8098 | BSSV6 | 3 | 3" | 1.72" (44 mm) | |||
| 8099 | BSSV6 | 4 | 4" | 2.22" (56 mm) |
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