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 8000 Series



Mark 8000 Series
A group of heavy-duty control valves specifically designed for process applications requiring full flow or fractional flow control.
Mark 8000 Series with Bellows Stem Seal Option
Bellows stem seals eliminate fugitive emissions by surrounding the valve stem with a pressure-tight barrier, isolating the stem from the process fluid and preventing leakage to the atmosphere. For an extra measure of protection, the bellows stem seal option provides a back-up seal of Teflon, braided or Graphite/Grafoil packing.
Mark 8000 Series with Cryogenic Option
The cryogenic option offers a bonnet extension that provides protection for the packing and actuator by preventing the formation and build-up of ice, which can interfere with movement of the valve stem and affect valve performance and control.
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Mark 8000 Series with Three Way Body
The three-way Mark 8000 can be specified for use on mixing or diverting services. As a mixing valve, it is designed with two inlets to blend two separate flow streams into a common outlet creating a third fluid.

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