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Vacuum Breaker Threaded In-Line Check Valves
Vacuum Breaker Check Valves
DFT® 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® 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.
Standard Features:
Standard Features:
- 1" to 4" Size (Outside Diameter)
- 450 to 6000 CWP
- Threaded O.D. (MNPT)
- Unthreaded Inlet Bore
- Stainless Steel Construction
- Spring-Assisted Silent Closing
- Horizontal or Vertical Installation
- Tight Shutoff - Lapped Disc & Seat
- Easy Maintenance
- Versatile
Prod. # |
Inventory |
Series |
Size |
Nominal Size (MNPT) A |
Unthreaded Inlet Bore B |
Style |
Valve Cracking Pressure |
Cold Working Pressure |
Seat |
ENDS |
Inventory |
Rfi_link |
List Price |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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8033 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 1 in25 mm | Nominal Size (MNPT) A N/A 1.00 in | Unthreaded Inlet Bore B N/A 0.56 in14 mm | Style N/A BSSV | Valve Cracking Pressure N/A 0.6 psi0.041 bar16.7 in.water424 mm.water31.1 mmHg | Cold Working Pressure N/A 0 psig2500 psig0 barg172 barg | Seat N/A 303 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8103 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 1 in25 mm | Nominal Size (MNPT) A N/A 1.00 in | Unthreaded Inlet Bore B N/A 0.56 in14 mm | Style N/A BSSV | Valve Cracking Pressure N/A 0.24 psi0.017 bar6.6 in.water167 mm.water12.4 mmHg | Cold Working Pressure N/A 0 psig2500 psig0 barg172 barg | Seat N/A 303 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8034 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 1.5 in40 mm | Nominal Size (MNPT) A N/A 1.50 in | Unthreaded Inlet Bore B N/A 0.88 in22 mm | Style N/A BSSV | Valve Cracking Pressure N/A 0.44 psi0.03 bar12.1 in.water307 mm.water22.6 mmHg | Cold Working Pressure N/A 0 psig2000 psig0 barg138 barg | Seat N/A 303 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8035 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 2 in50 mm | Nominal Size (MNPT) A N/A 2.00 in | Unthreaded Inlet Bore B N/A 1.09 in28 mm | Style N/A BSSV | Valve Cracking Pressure N/A 0.36 psi0.025 bar10.1 in.water257 mm.water18.8 mmHg | Cold Working Pressure N/A 0 psig1500 psig0 barg103 barg | Seat N/A 303 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8036 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 2.5 in65 mm | Nominal Size (MNPT) A N/A 2.50 in | Unthreaded Inlet Bore B N/A 1.50 in38 mm | Style N/A BSSV | Valve Cracking Pressure N/A 0.16 psi0.011 bar4.5 in.water114 mm.water8.4 mmHg | Cold Working Pressure N/A 0 psig850 psig0 barg58.6 barg | Seat N/A 303 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8037 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 3 in80 mm | Nominal Size (MNPT) A N/A 3.00 in | Unthreaded Inlet Bore B N/A 1.72 in44 mm | Style N/A BSSV | Valve Cracking Pressure N/A 0.15 psi0.01 bar4.2 in.water107 mm.water7.8 mmHg | Cold Working Pressure N/A 0 psig700 psig0 barg48.3 barg | Seat N/A 303 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8038 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 4 in100 mm | Nominal Size (MNPT) A N/A 4.00 in | Unthreaded Inlet Bore B N/A 2.22 in56 mm | Style N/A BSSV | Valve Cracking Pressure N/A 0.1 psi0.007 bar2.6 in.water66 mm.water4.8 mmHg | Cold Working Pressure N/A 0 psig450 psig0 barg31.0 barg | Seat N/A 303 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8094 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 1 in25 mm | Nominal Size (MNPT) A N/A 1.00 in | Unthreaded Inlet Bore B N/A 0.56 in14 mm | Style N/A BSSV6 | Valve Cracking Pressure N/A 0.6 psi0.041 bar16.7 in.water424 mm.water31.1 mmHg | Cold Working Pressure N/A 0 psig6000 psig0 barg414 barg | Seat N/A 316 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8095 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 1.5 in40 mm | Nominal Size (MNPT) A N/A 1.50 in | Unthreaded Inlet Bore B N/A 0.88 in22 mm | Style N/A BSSV6 | Valve Cracking Pressure N/A 0.44 psi0.03 bar12.1 in.water307 mm.water22.6 mmHg | Cold Working Pressure N/A 0 psig5500 psig0 barg379 barg | Seat N/A 316 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8096 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 2 in50 mm | Nominal Size (MNPT) A N/A 2.00 in | Unthreaded Inlet Bore B N/A 1.09 in28 mm | Style N/A BSSV6 | Valve Cracking Pressure N/A 0.36 psi0.025 bar10.1 in.water257 mm.water18.8 mmHg | Cold Working Pressure N/A 0 psig3000 psig0 barg207 barg | Seat N/A 316 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8097 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 2.5 in65 mm | Nominal Size (MNPT) A N/A 2.50 in | Unthreaded Inlet Bore B N/A 1.50 in38 mm | Style N/A BSSV6 | Valve Cracking Pressure N/A 0.16 psi0.011 bar4.5 in.water114 mm.water8.4 mmHg | Cold Working Pressure N/A 0 psig1100 psig0 barg75.8 barg | Seat N/A 316 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8098 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 3 in80 mm | Nominal Size (MNPT) A N/A 3.00 in | Unthreaded Inlet Bore B N/A 1.72 in44 mm | Style N/A BSSV6 | Valve Cracking Pressure N/A 0.15 psi0.01 bar4.2 in.water107 mm.water7.8 mmHg | Cold Working Pressure N/A 0 psig900 psig0 barg62.1 barg | Seat N/A 316 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} | |
8099 |
Inventory
N/A {0} |
Series N/A Vacuum Breaker | Size N/A 4 in100 mm | Nominal Size (MNPT) A N/A 4.00 in | Unthreaded Inlet Bore B N/A 2.22 in56 mm | Style N/A BSSV6 | Valve Cracking Pressure N/A 0.1 psi0.007 bar2.6 in.water66 mm.water4.8 mmHg | Cold Working Pressure N/A 0 psig450 psig0 barg31.0 barg | Seat N/A 316 SS | ENDS N/A NPT (Threaded) | Inventory N/A =CASE WHEN {Inventory}=0 THEN {Rfi_link} ELSE CONVERT(VARCHAR(255),{Inventory}) END= | {QUOTE} |