Manual control, low to high flow, Jorlon diaphragm

Angle or inline style manual control valve, for manual precision control of media, process, purified water and clean utilities in the Biopharmaceutical, Pharmaceutical, Food & Beverage and Consumer Health & Beauty industries:

  • Bioreactor/Fermenter process input control, growth media, buffer, WFI, spare and blanket gas
  • Separation input and out control: WFI, process, product and waste streams
  • Purification input and output control, elution media, solvents buffer, WFI
  • Formulation/fill control: WFI and other vessel inputs, blanket gas, dosing pressure
  • Clean utilities: WFI, pure steam, CIP, clean compressed air & gas
    F & B and consumer H & B process: inputs, outputs, purified water, and clean utilities
Features & Benefits
  • Stem position indication on bonnet allows repeatable stem positioning. Fine threads on bonnet and stem allow precise, manual process control
  • Specialized design of diaphragm seal and components allows ultra-high cycle life and lifetime diaphragm warranty
  • Jordan diaphragm – highest continuous steam pressure ratings on the market, full CIP/SIP capabilities
  • FDA & USP Class VI compliance standard on all process seal and seat materials
  • Self-draining – same draining characteristics as the MK978-JD
  • No guiding in the wetted area – prevents particulate generation
  • Mechanically polished internal components -20Ra (0,5 µm) finish, electropolish – standard; 9Ra optional
  • Wetted parts made of 100% ASTM A479 316L Stainless Steel barstock
  • Maintenance friendly – easy to perform sanitary maintenance with simple disassembly and reassembly
  • Size: Angle and Inline body: 1/2″ through 2″ (DN15 through DN50)
  • End Connections: ASME, DIN and ISO tri-clamp, extended tube weld
  • Cv (Kv) & Flow Characteristics: 0.2 – 70 Cv (0,17 – 60,5* Kv), linear, quick opening or equal percentage trim characteristics (*modified linear)
  • Max. Pressure/Temperature: 150 psi (10,3 bar) at 100°F (38°C) dependent upon construction; 100 psi (6,9 bar) at 340°F (171°C) dependent upon construction
  • Body Material: ASME SA479 316L (UNS 31603) is standard. EN 10272:2000 GR 1.4435, AL-6XN®, Hastelloy C-22 and others are optional
  • Surface Finish: ASTM A479 316L Stainless Steel, 20Ra (0,5µm) electropolish is standard, 8Ra (0,2µm) optional
  • Stem Seal – Diaphragm: Jorlon (1/2″ – 2″) all materials certified to FDA/USP Class VI
  • Soft Seat Option (Cv > 3.5 only): PTFE FDA/USP Class VI to 252°F (122°C) continuous or 275°F (135°C) in intermittent (<15 min over 1 hour); PEEK FDA/USP Class VI to 350°F (177°C)

Jorlon Facts and Warranty

The majority of Steriflow valves come with the Jorlon diaphragm and, of course, a lifetime diaphragm warranty.

  • All products use FDA and USP Class VI approved soft goods and seals where possible. Consult each product data for details

Get A Quote

Mark 978JD Series

Medium to high flow, Jorlon diaphragm