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Bellows-Sealed
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) |
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