DFT Vacuum Breakers From Durabla

Two Durabla Vacuum Breakers
used in a "dry can".

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.

DFT Vacuum Breaker Features
1" to 4" Size	450 to 6000 CWP		Threaded O.D. (MNPT)
Unthreaded Inlet Bore	Stainless Steel Construction		Versatile
Tight Shut-Off	Soft Seat Option		Easy Maintenance
Horizontal or Vertical Installation		Spring Assisted Silent Closing

Durabla Vacuum Breaker Diagram

Technical Information
Durabla Vacuum Breaker		CV	Friction Loss (Feet of Pipe)	Valve Cracking Pressure*		Approx. Net WT. Each (In lbs.)
Nominal Size (MNPT) A	Unthreaded Inlet Bore B	CV	Friction Loss (Feet of Pipe)	(PSI)	(Inches of Water)	Approx. Net WT. Each (In lbs.)
1"	9/16"	5.8	7	0.60⁽¹⁾	16.7	0.38
1-1/2"	7/8"	13.2	6	0.45	12.5	0.88
2"	1-3/32"	23.1	7	0.38	10.5	1.25
2-1/2"	1-1/2"	36	12.5	0.20	5.5	2.25
3"	1-23/32"	57.4	11	0.14	3.9	3.75
4"	2-7/32"	90	16	0.15	4.3	7.00
* - 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)

VACUUM BREAKER SIZE	SIZE	COLD, NON-STOCK PRESSURE RATING (2)	PRODUCT CODE	PRICE
BSSV	1"	2500	8033	CALL FOR QUOTE
	1"	2500	8103 (Light Spring)⁽²⁾
	1-1/2"	2000	8034
	2"	1500	8035
	2-1/2"	850	8036
	3"	700	8037
	4"	450	8038
BSSV6	1	6000	8094
	1-1/2	5500	8095
	2	3000	8096
	2-1/2	1100	8097
	3	900	8098
	4	450	8099
⁽²⁾0.24 PSI Crack Pressure Spring (+/- 10%)

Contact Us Directly:

Toll Free: 1-800-780-3776
Int'l Phone: 770-957-9599
Int'l Fax: 770-957-9563
E-Mail: Email Your Request

Mailing Address: Power Plus International
309 Westridge Parkway
McDonough, GA 30253