Mark 708HT Series
Finned Bonnet Fractional Flow Control Valve
The cooling fin bonnet option is for the protection of the stem packing from elevated temperatures associated with steam, hot water, and high temperature oil, gas and liquid services (up to 1000°F; 538°C). The finned bonnet cools the area around the packing, which permits the use of standard packing materials that otherwise would not be suitable for the service temperature conditions.
- Pilot plant installations
- Test stands
- R & D facilities
- Processing plants
- Specialized processing plants
Industries
- Aviation & aerospace
- Chemical, refining & petrochemical
- Oil & gas
- Process or industrial
- Test equipment & service
- For steam, hot water, and high temperature oil, gas and liquid service
- Provides cooling effect on bonnet, protecting the packing from higher than normal temperature conditions
- For precise control of higher temperature fractional flow services in pilot plant process applications
Seat Type: Globe – Class IV
Sizes: 1/4″ – 3/4″ (DN8 – DN20)
End Connections: Threaded, Socket Weld*, Integral Tube, Welded Flange* (* 1/2″ & 3/4″ only)
Body Materials: Carbon Steel, 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 top-mounted positioner
CRN Number
ATEX Certified
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Mark 708 Series
Precision Control, Fractional Flow Control Valve
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