Model 4370 is the Australian made version of US manufactured Mk70, diaphragm operated Control 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 (4350/4360) and Temperature Control Valves (4380). It is available in sizes ½”→ 2” (Cv 2.5 to 30). The standard valve has threaded (bspt) ends 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 (2100kpa) / DI (3,100kpa) / 316SS (4,500kpa)
Maximum temp- BZ/DI (260°C)/ 316SS (343°C)
Max pressure differential: 125-250 psi (without positioner), 125-550 psi with positioner
Options: 43701 Cv 50 High Flow version, equal % seats, low flow seats for all sizes, side or top mounted positioner, flanges to AS or Ansi. Many more options, higher pressure/temps etc for US made Mk70 (see download), flanged MK711
download mk70
