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)

• Valve 
• Full pressure rating in either flow direction for system versatility 
• Easily purged to maintain clean operation
• Stem guiding outside of system fluid for cleanliness
• Inverted bellows design for strength
• Replaceable subassembly for easy maintenance
• Normally closed and normally open pneumatic actuators 

High-Purity Bellows Valves Process Specifications

• Standard, no process designator: Special Cleaning and Packaging (SC-11)
• Special cleaning with non–ozone-depleting chemicals
• Performed in specially cleaned areas; valves are individually bagged
• 20 µin. (0.51 µm) average, machine finished.
• Ultrahigh-purity, process designator P: Ultrahigh-Purity Process Specification (SC-01)
• Ultrahigh-purity cleaning with a continuously monitored, deionized water, ultrasonic cleaning system
• Performed in ISO Class 4 work areas; valves are double bagged and vacuum sealed in cleanroom bags
• 8 µin. (0.20 µm) average, machine finished and electropolished.

Testing
Inboard helium leak tested to a rate of 4 × 10^–9 std cm³/s at the seat, envelope, and all seals. Pneumatic actuator leak tested to a maximum leak rate of 1 std cm³/min.

Options and Accessories

Indicator Switch	Multiport Valve

• Indicator Switches 
• Transmit a signal to an electrical device indicating either the open or closed position of a pneumatically actuated HB series bellows valve
• Factory assembled
• Indicator switch kits for field assembly
• Polyimide Stem Tips
• For temperatures up to 400°F (204°C)
• Multiport and Elbow Valves and Multivalve Manifolds
• HB series bellows valves are available in multiport and elbow configurations; download the Swagelok Bellows- and Diaphragm-Sealed Multiport and Elbow Valves catalog.
• Multivalve manifolds are also available; contact your authorized Swagelok sales and service representative.