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Since its foundation in 1977, Hy-Lok has been unyieldingly maintaining its own route while keeping a leading position in the Fluid & Control System Industry in the world. Thanks to the long-term experience, Hy-Lok has supplied tubing system to the world instrumentation market including a variety of piping materials. With the practical experiences, Hy-Lok has perfectly performed as a turnkey business from essential technique of Fluid & Control System to workmanships for installation in all industrial areas in the world. Hy-Lok has built the high level of customer’s satisfactions of its quality by achieving internationally accredited certifications such as ISO 9001, ISO/TS 16949:2009,ISO 14001, OHSAS 18001, ASME, CE MARK, KEPIC and many others. As a specialist in the Fluid & Control System Industry, Hy-Lok is making utmost efforts to supply better technology and service to customers. Based on pursuing top quality and service, taking first priority for customer’s satisfaction and expanding its operations worldwide, Hy-Lok is making it come true.


Tube Fitting, Instrument Valve, Manifold Valve, Double Block & Bleed Valve, Manual Ball Valve, Cryogenic Valve, etc.

Product Description 

Tube Fitting

  • Compression two ferrule design
  • Vibration resistance
  • Complete interchangeability
  • Easy to disconnect and retighten
  • Tested by ASTM F1387-12 (SWRI)
  • Available diverse materials and configurations
  • Back ferrule provides a strong mechanical and anti-vibration hold on the tube
  • Pressure seal by front ferrule on the tube and body
  • Fine pitch, silver plated nut, threads ensure no galling
  • Available metric or imperial size

Instrument Valve

  • Available metric or imperial size with threaded or tube fitting ends
  • Multiple configurations
  • Innovative leak proof design
  • Strong flowing capability
  • Low torque operation
  • Highest quality
  • Compact design
  • Every valve is factory tested
  • High Cycle Options for Extended Service Life

Manifold Valve

  • Full 316 / 316L Dual Certified Stainless Steel Components
  • Full Compliance of NACE MR-01-75 Specifications
  • Laser Engraved Identification
  • Hy-Lok® Close Tolerance NPT Threads to ensure maximum engagement with mating threaded components
  • Available with integral / Hy-Lok® Tube Fitting Connections on certain models.
  • NORSOK M-650 approved mill available
  • Optional anti-tamper and locking handles and round wheel handles available.
  • Optional tube adaptors available

Double Block & Bleed Valve

  • Reduced leak paths, higher valve integrity and durability
  • Reduced weight
  • Less pipeline stresses due to loading and vibration
  • Less supporting structures (cradles)
  • Less cost
  • Reduced installation times
  • Reduced maintenance times

Manual Ball Valve

  • Pipeline Valves
  • End connections : Flanged, Butt Welding
  • Floating & Trunnion Mounted Ball
  • Metal to Metal Seated for high temperature service
  • Fire Safe design available according to API 607 6th Ed.

Cryogenic Valve

  • Easy maintenance in-line guarantee
  • Compact design & easy operation
  • Top entry bolted extension bonnet
  • Anti blow out proof stem
  • Fire safe design available according to API 607 6th Ed.
  • End connection: Flanged, Screwed, Butt Welding
  • Size Range

Cryogenic Needle Valve – 1/2 to 1 inch (ASME 150LB to 1500LB)
Cryogenic Ball Valve – 1/2 to 12 inch (ASME 150LB to 900LB)


  • REPRESENTATIVE : SH Noh | Sales General Manager
  • ADDRESS : 97, Noksansandan 27-ro, Gangseo-Gu, Busan, Korea (46751)
  • TELEPHONE : +82-50-970-0875
  • FACSIMILES : +82-51-831-7922
  • HOMEPAGE : www.hy-lok.com
  • E-MAIL : nohhwan@hy-lok.com
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