Mark 708 Series
Precision Control, Fractional Flow Control Valve
The Mark 708 Series provides accurate control on fractional flow applications. It is a complete line of pneumatic and electrically actuated control valves designed to enhance performance to ensure precision control on your most critical micro flow applications.
- Pilot plant installations
- Test stands
- R & D facilities
- Processing plants
- Specialized processing plants (dosing, injection and venting)
Industries
- Aviation & aerospace
- Chemical, refining & petrochemical
- Oil & gas
- Process or industrial
- Test equipment & services
Rolling diaphragm
Spring-loaded TFE/Chevron packing
Bolted body/bonnet connection
Guided trim standard
Quick change trim standard (0.05 Cv and above)
Threaded bonnet for quick disassembly
Secondary stem connection eliminates stroke adjustment changing trim
Optional side mounted or top mounted positioner
Seat Type: Globe – Class IV or VI
Sizes: 1/4″ – 3/4″ (DN8 – DN20)
End Connections: Threaded, Socket Weld, Integral Tube, Welded Flange
Body Materials: Carbon Steel, Stainless Steel, Hastelloy C, Monel, Alloy 20, others
Cv (Kv): 0.00001 to 4.0 (0,000009 to 3,4)
Ranges: 3-15 or 6-30 psi; split ranges are available with optional positioner
Installation and Maintenance Videos
We have designed a series of short videos to educate users about maintaining and installing our products.
Product Overview Videos
Watch our Product Overview videos that give a brief introduction to our products and their advantages in many applications.
CRN Number
ATEX Certified
1/4″ MK708 with A105 CS Barstock, Hastelloy C, WCB CS, CF8M SS, or 316/316L SS Barstock with Integral Tube ends and 14M Actuator
1/4″ MK708 with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with BSPT Ends and 14M Actuator
1/4″ MK708 with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with BSPP Ends and 14M Actuator
1/4″ MK708 with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with NPT Ends and 14M Actuator
1/4″ MK708 with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with FSW Ends and 14M Actuator
1/4″ MK708 with WCB CS or CF8M SS with BSPP ends and 14M Actuator
1/4″ MK708 with WCB CS or CF8M SS with BSPT ends and 14M Actuator
1/4″ MK708 with WCB CS or CF8M SS with NPT ends and 14M Actuator
1/4″ MK708 with WCB CS or CF8M SS with FSW ends and 14M Actuator
1/2″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSPP ends and 14M Actuator
1/2″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSBT ends and 14M Actuator
1/2″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with NPT ends and 14M Actuator
1/2″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with FSW ends and 14M Actuator
1/2″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with Integral Tube ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with BSPP ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with BSPT ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with 300#FE ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with 150#FE ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with PN16 ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with NPT ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with FSW ends and 14M Actuator
1/2″ MK708 with WCB CS or CF8M SS with Integral Tube ends and 14M Actuator
3/4″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSPP ends and 14M Actuator
3/4″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSPT ends and 14M Actuator
3/4″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with 150#FE ends and 14M Actuator
3/4″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with NPT ends and 14M Actuator
3/4″ MK708 with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with FSW ends and 14M Actuator
3/4″ MK708 with WCB CS or CF8M SS with BSPP ends and 14M Actuator
3/4″ MK708 with WCB CS or CF8M SS with BSPT ends and 14M Actuator
3/4″ MK708 with WCB CS or CF8M SS with 300#FE ends and 14M Actuator
3/4″ MK708 with WCB CS or CF8M SS with 150#FE ends and 14M Actuator
3/4″ MK708 with WCB CS or CF8M SS with NPT ends and 14M Actuator
3/4″ MK708 with WCB CS or CF8M SS with FSW ends and 14M Actuator
1/4″ MK708SP with A105 CS Barstock, Hastelloy C, WCB CS, CF8M SS, or 316/316L SS Barstock with Integral Tube ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with BSPT Ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with BSPP Ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with NPT Ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock, Hastelloy C, or 316/316L SS Barstock with FSW Ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock or CF8M SS with BSPP ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock or CF8M SS with BSPT ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock or CF8M SS with NPT ends and 14M Actuator and MK16IQ Positioner
1/4″ MK708SP with A105 CS Barstock or CF8M SS with FSW ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSPP ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSBT ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with 150#FE ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with NPT ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with FSW ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with Integral Tube ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with BSPP ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with BSPT ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with 300#FE ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with 150#FE ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with PN16 ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with NPT ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with FSW ends and 14M Actuator and MK16IQ Positioner
1/2″ MK708SP with WCB CS or CF8M SS with Integral Tube ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSPP ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with BSPT ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with 150#FE ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with NPT ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with A105 CS Barstock, Hastelloy C, 316/316L SS Barstock or Alloy 20 with FSW ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with WCB CS or CF8M SS with BSPP ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with WCB CS or CF8M SS with BSPT ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with WCB CS or CF8M SS with 300#FE ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with WCB CS or CF8M SS with 150#FE ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with WCB CS or CF8M SS with NPT ends and 14M Actuator and MK16IQ Positioner
3/4″ MK708SP with WCB CS or CF8M SS with FSW ends and 14M Actuator and MK16IQ Positioner
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