Extended Bonnet Fractional Flow Control Valve

The Mark 708CR for cryogenic service features a 9" bonnet extension (optional 14") that provides protection for the packing and actuator by preventing ice build-up, which can interfere with movement of the valve stem and affect valve performance. For cryogenic services with temperatures as low as -320°F (-195°C).

  • Pilot plant installations
  • R & D facilities
  • Liquid CO2
  • Hydrogen
  • Nitrogen
  • Low temperature applications


  • Aviation & aerospace
  • Chemical, refining & petrochemical
  • Oil & gas
  • Process or industrial
  • Test equipment & services
Features & Benefits
  • Protects the packing and actuator by preventing ice build-up which can interfere with stem movement
  • Wide range of interchangeable trims
  • TFE chevron ring packing
  • Optional side mounted or top mounted positioner

Seat Type: Globe – Class IV

Sizes: 1/4″ – 3/4″ (DN8 – DN20)

End Connections: Threaded, Socket Weld, Integral Tube, Welded Flange

Body Materials: Stainless Steel, Hastelloy C, Monel, Alloy 20, others

Cv (Kv): 0.05 to 4.0 (0,04 to 3,4)

Ranges: 3-15 or 6-30 psi; split ranges are available with optional positioner


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Product Overview Videos

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Mark 708 Series

Precision Control, Fractional Flow Control Valve

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