alert icon

Internet Explorer 8 or 9 is not supported by this website. Please either update your version of Internet Explorer, or use a more up to date browser.

Hide Message hide icon

Bellows-Sealed

Bellows-Sealed Valves

Bellows-Sealed Valves

  • 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)

Specifications

Working Pressure up to 1000 psig (68.9 bar)
Temperature –20 to 900° F (–28 to 482°C)
Flow Coefficient 0.12 to 1.2
Body Materials Stainless steel, brass, alloy 400
Stem Tip Materials 316 stainless steel, PCTFE, cobalt-based alloy
End Connections
   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)

Specifications

Working Pressure Up to 2500 psig (172 bar)
Temperature -20 to 1200°F (–28 to 648°C)
Flow Coefficient 0.36 to 5.3
Body Materials 316 stainless steel
Stem Tip Materials 316 stainless steel, PCTFE, cobalt-based alloy
End Connections
   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)

Specifications

Working Pressure Up to 1000 psig (68.9 bar)
Temperature -80 to 600°F (–62 to 315°C)
Flow Coefficient 0.11 to 0.28
Body Materials 316 stainless steel or brass
Stem Tip Materials S17400 or PCTFE
End Connections
   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)

Specifications

Working Pressure Up to 700 psig (48.2 bar)
Temperature -20 to 900°F (–28 to 482°C)
Flow Coefficient 0.019 to 0.30
Body Materials 316 stainless steel
Stem Tip Materials Fluorocarbon FKM-bonded 316 stainless steel
End Connections
   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

0.11 in.3 (1.6 cm3)—regulating stem tip

Bellows-Sealed Valve for Switching Service (BY Series)

Specifications

Working Pressure Vacuum to 150 psig (10.3 bar)
Temperature 0 to 200°F (–18 to 93°C)
Body Material 316 stainless steel
Stem Tip Material PTFE-coated 316 stainless steel
End Connections 1/4 in. VCR face seal fitting or Swagelok tube fitting

Bellows Valves (BN Series)

Specifications

Working Pressure Vacuum to 500 psig (34.4 bar)
Temperature –40 to 200°F (–40 to 93°C)
Flow Coefficient 0.30 and 0.70
Body Materials 316L stainless steel
Stem Insert Materials PCTFE
End Connections
   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)

Specifications

Working Pressure Up to 3500 psig (241 bar)
Temperature –40 to 400°F (–40 to 204°C)
Flow Coefficient 0.3
Body Material 316L stainless steel
Stem Tip Materials PCTFE
End Connections
   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)

View and purchase our most widely used products.

Discover more about how Swagelok products can work for you. Browse our catalogs or locate a sales and service center.

"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."