Process Valves > Control Valves > Steriflow Mark 978JD

Steriflow Mark 978JD Sanitary Globe-Style Control Valve with Jorlon Diaphragm

Steriflow's Mark 978JD (Jorlon diaphragm) meets ASME BPE 2009 guidelines and is ideally suited for a wide range of flowing media in both the clean utility and process areas of sanitary and aseptic systems. High rangeability, true characterized trim, high capacities, superior temperature and pressure ratings, facilitated by a superior diaphragm, make the MK978 the sanitary control valve for sterile process, buffer, WFI and acid metering and clean gas and steam services.

Key Specifications

  • Wetted parts made of 100% ASTM A479 316L stainless steel barstock, 20Ra mechanically polished internals
  • FDA/USP Class VI Jorlon diaphragm resistant to aggressive chemicals, suitable for indefinite steam service, offers unsurpassed service life
  • All stem guiding above the diaphragm eliminates particulate generation
  • Extended PEEK guide bushing ensures smooth, stable movement throughout entire stroke length regardless of valve orientation (on its side or upright)
  • Contoured plug design for true equal percentage or linear flow characteristics throughout entire stroke length
  • Corrosion resistant SST Namur yoke assembly suitable for washdown, permitting easy mounting of positioners
  • Also available in O-ring and low flow models
  • Lifetime warranty on Jorlon diaphragm