MK70 Pneumatic Control Valve
MK70 is a diaphragm operated Control Valve manufactured in the US by Jordan Valve. The valve is metal/metal seated (Ansi class IV) and utilises the same sliding gate seats found in Jordan’s range of Pressure Regulators (MK50/MK60) and Temperature Control Valves (MK80).
It is available in sizes ½”→ 2” (Cv 2.5 to 30) and up to 6″ in model 711. The standard valve has threaded (BSPT or NPT) but can be flanged on request. The valve is actioned by a multi-spring pneumatic actuator and can be used for on/off or modulating for liquids, gases, chemicals and steam. Flow is controlled by the movement of the gate/disc which moves in response to a 3-15 psi pneumatic signal received from a controller. Where the signal is in milliamps, an I/P transducer can be fitted (i.e. converts a 4-20mA signal to 3-15 psi) or, for even more precise control, the pneumatic actuator can be fitted with a pneumatic or I/P positioner.
Maximum inlet pressure- BZ (34 bar) / DI (68 bar) / WCB (102 bar)/ 316SS (99 bar)
Maximum temp- BZ/DI (343°C)/ WCB/316SS (343°C)
Max pressure differential: 8.6-17.2 bar (without positioner), 8.6-24.1 bar (with positioner)
* Options: MK701/702 Cv 50/70 High Flow version, equal % seats, low flow seats for all sizes, side or top mounted positioner, flanges to AS or Ansi. Many more options, flanged MK711 (sizes to DN150)