Product description

Angle style control valve, for continuous precision control of gas, air, USP PW (purified water), CIP fluids in the biopharmaceutical, pharmaceutical, food & beverage and consumer health & beauty industries


  • Small vessel process input control: clean compressed air and gas
  • Clean utilities: USP PW, CIP, clean compressed air and gas
  • F & B and Consumer H & B process: inputs, outputs, purified water and clean utilities

Control Valve MK978LF-OR

  • 1/2″ & 3/4″ (DN15 & DN20)
End Connections
  • ASME, DIN and ISO tri-clamp, extended tube weld
Cv (Kv) & Flow Characteristics
  • 0.005 – 0.1 (0,0043 – 0,086)
Max. Pressure/Temperature
  • 200 psi (13,8 bar) at 300°F (149°C) dependent on o-ring construction
Wetted 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
  • ASME BPE SF5, 20Ra (0,5µm) electropolish is standard, 8Ra (0,2µm) optional
Stem Seal – O-Ring
  • Various – all certified to FDA/USP Class VI
Features and Benefits
  • The smallest nominal flow offering in the industry. Six Cv’s between 0.005 and 0.1 enables you to control flow for any application
  • Maintenance friendly – easy to perform maintenance with simple disassembly, reassembly, and steam-in-place/clean-in-place capabilities
  • Mechanically and electropolished internal components – 20Ra (0,5µm) finish; others upon request
  • FDA and USP Class VI conformity on all process seal materials
  • Self-draining (no hold-up) – when mounted in either vertical or horizontal orientations
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