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
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%)
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(Feet of Pipe)
Valve Cracking Pressure*
Valve Cracking Pressure*
(Inches of Water)
|BSSV||1"||1"||.56" (14mm)||2.00||8033||$72.75||Add to Cart Add to RFQ|
|BSSV||1"||1"||.56" (14mm)||2.00||8103||$72.75||Add to Cart Add to RFQ|
|BSSV||1-1/2"||1-1/2"||.88 (22mm)||2.00||8034||$126.95||Add to Cart Add to RFQ|
|BSSV||2"||2"||1.09" (28mm)||3.00||8035||$155.25||Add to Cart Add to RFQ|
|BSSV||2-1/2"||2-1/2"||1-1/2" (38mm)||4.00||8036||$209.25||Add to Cart Add to RFQ|
|BSSV||3"||3"||1.72" (44 mm)||6.00||8037||$290.50||Add to Cart Add to RFQ|
|BSSV||4"||4"||2.22" (56 mm)||9.00||8038||$450.50||Add to Cart Add to RFQ|
|BSSV6||1||1"||0.56" (14 mm)||2.00||8094||$114.50||Add to Cart Add to RFQ|
|BSSV6||1-1/2||1-1/2"||0.88" (22 mm)||3.00||8095||$148.95||Add to Cart Add to RFQ|
|BSSV6||2||2"||1.09" (28 mm)||3.00||8096||$200.75||Add to Cart Add to RFQ|
|BSSV6||2-1/2||2-1/2"||1-1/2" (38 mm)||4.00||8097||$269.75||Add to Cart Add to RFQ|
|BSSV6||3||3"||1.72" (44 mm)||6.00||8098||$331.25||Add to Cart Add to RFQ|
|BSSV6||4||4"||2.22" (56 mm)||9.00||8099||$512.00||Add to Cart Add to RFQ|
Items to be returned must be approved by Power Plus International, and may be subjected to a restocking fee
Notice: Due to the uncontrollable metal costs, all prices and delivery times are subject to change on a daily basis.
PPI™ and Power Plus International™, and related marks and logos displayed on the Site, are our trademarks and may not be used in any way without our prior express written permission. Nothing contained on the Site shall be construed as granting, by implication, estoppel or otherwise, any license or right to use any of our marks displayed on the Site without our prior express written permission. All other trademarks not owned by us that appear on this Site are the property of their respective owners.
*NOTE: The products described herein are not manufactured by Patterson-Kelley nor is Power Plus
International in any way associated or affiliated with "PK", Patterson-Kelley, or Harsco Corporation.