• Reliable, leak-tight performance with a packless design where a seal to atmosphere is especially critical
• Welded seal which isolates system fluids to prevent leaks to atmosphere
• Multiple options for general and high-purity service

Bellows Valves (B Series)

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

Features

• 1/4, 3/8, 1/2, and 3/4 in.; 6, 10, and 12 mm end connections
• Brass, stainless steel, and alloy 400 materials
• Gasketed or welded body-to-bellows seals
• Stem tips for shutoff or regulating service
• Panel and bottom mounting

Specifications

Type	Swagelok® tube fittings, tube butt weld, tube socket weld, VCR® face seal fitting
Sizes	1/4 to 3/4 in.; 6 to 12 mm
Internal Volume	0.10 to 0.26 in3 (1.6 to 4.3 cm3)

Bellows Valves  with Secondary Packing (U Series)

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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

Features

• Gasketed or welded body-to-bellows seals
• Stem tips for shutoff or regulating service
• Panel, bottom, and side mounting available
• Secondary containment system above the bellows
• 1/4, 3/8, 1/2, 3/4, and 1 in.; 6, 10, and 12 mm end connections
• Stainless steel material

Specifications

Type	Swagelok® tube fittings, female VCR face seal fitting, tube socket weld, tube butt weld
Sizes	1/4 to 3/4 in.; 6 to 12 mm
Internal Volume	0.11 to 1.46 in3 (1.8 to 23.9 cm3)

Bellows Valves (H and HK Series)

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Features

• Compact size
• Precision-formed metal bellows and nonrotating stem tip for reliable, repetitive shutoff
• Variety of end connections
• Panel and bottom mounting
• Pneumatic actuator for HK series available

Specifications

Type	Swagelok® tube fittings, NPT, VCR face seal fitting, tube socket weld, tube butt weld, tube extension
Sizes	1/8 to 3/8 in.; 6 mm
Internal Volume	0.08 and 0.10 in3 (1.3 and 1.6 cm3)

Metering Bellows-Sealed Valves (BM Series)

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Features

• Micrometer handle for precise, repeatable flow settings
• 316 stainless steel construction
• Panel and bottom mounting are standard

Specifications

Type	Swagelok tube fittings, integral male VCR face seal fitting, tube socket weld, tube butt weld
Sizes	1/4 and 3/8 in.; 6 mm
Internal Volume	0.07 in.3 (1.1 cm3)—metering stem tip

Bellows-Sealed Valve for Switching Service (BY Series)

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Features

• Compact, packless valve switches flow from one line to another
• Torlon® stem guide ensures proper alignment for consistent shutoff performance
• Manual and spring-return and double-acting pneumatic actuators are available
• End connections include 1/4 in. Swagelok® VCR® metal gasket face seal fittings and 1/4 in. Swagelok tube fittings

Specifications

End Connections

1/4 in. VCR face seal fitting or Swagelok tube fitting

Bellows Valves (BN Series)

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Features

• Packless valves with all-metal seal to atmosphere
• 1/4 to 1/2 in. and 6 to 12 mm end connections
• 316L stainless steel construction—316L VAR for bodies with butt weld end connections
• Butt-weld ended valves are weldable with the Swagelok welding system
• Full pressure rating in either flow direction for system versatility
• Easily purged to maintain clean operation

Specifications

Type	Swagelok tube fitting, butt weld, tube weld, tube extension, VCR face seal fitting, VCO® O-ring fitting
Sizes	1/4 to 1/2 in.; 6 to 12 mm
Internal Volume	0.18 and 0.27 in.3 (2.9 and 4.4 cm3)

Bellows Valves, High-Pressure, Pneumatically Actuated (HB Series)

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Features

• Packless valves with all-metal seal to atmosphere
• VCR® face seal fitting, Swagelok® tube fitting, and weld end connections
• Easily purged to maintain clean operation

Specifications

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

CAD Files and Sales Drawings

Choose from more than 1 million Swagelok CAD templates and sales drawings in multi-lingual formats CAD templates are available in a variety of 2D or 3D file formats. Sales drawings are available in .pdf format. Search based on product names or part numbers.

EXPLORE CAD FILES

"Safe Product Selection: The complete catalog contents must be reviewed to ensure that the system designer and user make a safe product selection. When selecting products, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user. Caution: Do not mix or interchange product components with those of other manufacturers."

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