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Home > Products > Valves > Bellows-Sealed

Bellows-Sealed

Swagelok® Bellows Valves for General and High-Purity Service

Swagelok bellows-sealed valves are available in a wide variety of sizes, materials, and configurations to fill your needs for general and high-purity applications.


General Service

High-Purity Service

B series BN series
U series HB series
H and HK series
BM series metering
BY series switching

Bellows Valves—B Series

Bellows Valves - B Series

Swagelok® B series bellows-sealed valves are available in a variety of models for system versatility.


Specifications

Working Pressure
Temperature
Flow Coefficient
Body Materials
Stem Tip Materials

End Connections
• Type


• Size
Internal Volume

Up to 1000 psig (68.9 bar)
–20 to 900°F (–28 to 482°C)
0.12 to 1.2
316 stainless steel, brass, alloy 400
316 stainless steel, PCTFE,
cobalt-based alloy

Swagelok tube fittings, tube butt weld, tube socket weld, butt weld,
VCR® face seal fitting
1/4 to 3/4 in.; 6 to 12 mm
0.10 to 0.26 in.3 (1.6 to 4.3 cm3)

Bellows Valves with Secondary Packing—U Series

U Series Group

Swagelok® U series bellows-sealed valves enhance reliability, versatility, and safety—with a secondary containment system that prevents leaks to atmosphere even if the primary seal fails.




Specifications

Working Pressure
Temperature
Flow Coefficient
Body Material
Stem Tip Material

End Connections
• Type

• Size
Internal Volume

Up to 2500 psig (172 bar)
–20 to 1200°F (–28 to 648°C)
0.36 to 5.3
316 stainless steel
316 stainless steel, PCTFE,
cobalt-based alloy

Swagelok tube fitting, female VCR® face seal fitting, tube socket weld, tube butt weld
1/4 to 3/4 in.; 6 to 12 mm
0.11 to 1.46 in.3 (1.8 to 23.9 cm3)

Bellows Valves—H and HK Series

H and HK Valves

With flow coefficients from 0.11 to 0.28, Swagelok® H and HK series valves are compact bellows-sealed valves for general service.


Specifications

Working Pressure
Temperature
Flow Coefficient
Body Material
Stem Tip Material
End Connections
• Type


• Size
Internal Volume

Up to 1000 psig (68.9 bar)
–80 to 600°F (–62 to 315°C)
0.11 to 0.28
316 stainless steel or brass
S17400 or PCTFE

Swagelok tube fitting, NPT, VCR® face seal fitting, tube socket weld, tube butt weld, tube extension
1/8 to 3/8 in.; 6 mm
0.08 and 0.10 in.3 (1.3 and 1.6 cm3)

Metering Bellows-Sealed Valves—BM Series

BM Series Valves

Swagelok® bellows-sealed metering valves feature micrometer handles for precise, repeatable flow settings.


Specifications

Working Pressure
Temperature
Flow Coefficient
Body Material
Stem Tip Material
End Connections
• Type


• Size
Internal Volume

 

Up to 700 psig (48.2 bar)
–20 to 900°F (–28 to 482°C)
0.005 to 0.30
316 stainless steel
Hard chrome-plated 316 stainless steel

Swagelok tube fitting, tube socket weld, tube butt weld, integral male VCR® face seal fitting
1/4 and 3/8 in.; 6 mm
0.07 in.3 (1.1 cm.3)—metering stem tip
0.11 in.3 (1.6 cm3)—regulating stem tip

Bellows-Sealed Valve for Switching Service—BY Series

BY Valve

The compact, packless Swagelok® BY series bellows-sealed valve switches flow from one line to another.


Specifications

Working Pressure
Temperature
Body Material
Stem Tip Material
End Connections

Vacuum to 150 psig (10.3 bar)
0 to 200°F (–18 to 93°C)
316 stainless steel
PTFE-coated 316 stainless steel
1/4 in. VCR® face seal fittings or Swagelok tube fittings

Bellows Valves—BN Series

Swagelok® BN series bellows-sealed valves offer packless operation, with an all-metal seal to atmosphere and cleaning for high- and ultrahigh-purity systems.

BN Series Group

Specifications


Working Pressure
Temperature
Flow Coefficient
Body Material
Stem Tip Material
End Connections
• Type


• Size
Internal Volume

 

 

Vacuum to 500 psig (34.4 bar)
–40 to 200°F (–40 to 93°C)
0.30 and 0.70
316L stainless steel
PCTFE

Swagelok tube fitting, butt weld, tube weld, tube extension, VCR® face seal fitting, VCO® O-ring fitting
1/4 to 1/2 in.; 6 to 12 mm
0.18 and 0.27 in. 3 (2.9 and 4.4 cm 3 )

Bellows Valves, High-Pressure, Pneumatically Actuated—HB Series

HB Group 2

Swagelok® HB series bellows-sealed valves offer pressure ratings up to 3500 psig (241 bar) and cleaning for high-and ultrahigh-purity systems

Specifications

Working Pressure
Temperature
Flow Coefficient
Body Material
Stem Tip Material
End Connections
• Type

• Size
Internal Volume

Up to 3500 psig (241 bar)
–40 to 400°F (–40 to 204°C)
0.30
316L stainless steel
PCTFE

Swagelok tube fitting, VCR® face seal fitting, tube butt weld, tube socket weld
1/4 to 1/2 in.; 6 mm
0.27 in.3 (4.4 cm3)
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