Bellows Valves—H and HK Series
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)

More Information
Download the Bellows-Sealed Valves—H and HK Series catalog.
Find general service bellows valves in the product search.

Other Bellows Valves for General Service
B series general-service bellows-sealed valves
U series general-service bellows-sealed valves with secondary packing

Features

• Compact size 
• Precision-formed metal bellows and nonrotating stem tip for reliable,
  repetitive shutoff  
• Panel and bottom mounting 

Testing
Every H and HK series bellows valve is helium leak tested to a maximum leak rate of 4 × 10^–9 std cm³/s at the seat, envelope, and all seals.



Cleaning and Packaging

• Swagelok H series bellows valves with VCR end connections are processed in accordance with Swagelok Special Cleaning and Packaging (SC-11), to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C.
• Swagelok H series bellows valves with other end connections are processed in accordance with Swagelok Standard Cleaning and Packaging (SC-10); special cleaning and packaging are available as an option.
• All Swagelok HK series bellows valves are cleaned and packaged in accordance with Swagelok Standard Cleaning and Packaging (SC-10).

Options

• H Series
• Cobalt-Based Alloy Stem Tip 
• For severe service applications 
• Spherical stem tip is welded to stem 
• Fluorinated-based lubricant is applied to stem tip
• HK Series
• Copper Stem Tip 
• For temperatures up to 400°F (204°C) at 150 psig (10.3 bar) 
• Includes copper gasket for body-to-bonnet seal
• Alloy 400 body material for system compatibility.
• Pneumatic Actuators 
• Normally closed and normally open actuation
• Low actuation pressure 
• Factory-assembled or as a kit for field assembly