PAC Stainless LTD

For a Quote or Info:

Contact Us

ProductsDK-LOK Tube Fittings, Super Duplex 2507 Tubing, Seamless Stainless Steel Tubing, Seamless Stainless Steel Pipe, Stainless Steel Pipe, Stainless Steel Products, Nickel Alloy Tubing, 317L Tubing

DK-LOK® Instrumentation Fittings and Valves

DK-LOK® adheres to the most stringent industry standards and, as a result, is one of the most certified tube fitting and valve manufacturers in the world. This quality, high-value, import product is available in stainless steel and other nickel alloys.

Products are heat/lot code traceable. MTRs available on request.

Compression Tube Fittings

Two precision machined tube fitting options are available: DK-Lok dual ferrule and Z-Series single ferrule.

  DK-Lok Dual Ferrule Z-Series Single Ferrule
Fractional Sizes 1/16" to 2" 1/16" to 2"
Metric Sizes 3mm to 50mm 3mm to 50mm
Temperature Range -325⁰F to 1200⁰F -325⁰F to 1200⁰F

Available in a variety of configurations and options including:

Straights Port Connectors
Tees Tube Stub
Elbows JIC 37⁰ Flare (AN)
Crosses MNPT and FNPT
Caps SAE
Plugs BSPP and BSPT
Connectors Butt Weld
Adapters Socket Weld

ASTM F 1387 Compliant. Interchangeable and intermixable with industry standards.

Instrumentation Pipe and Weld Fittings

Three lines of instrumentation grade pipe fittings are available. Traditional thread and weld fittings that meet standard code pressure ratings, 6K thread fittings over 1" rated to 6,000 psig, and 10K thread fittings rated to 10,000 psig (689 bar).

Rolled male threads MNPT and FNPT Socket and Butt Weld
Restricted thread tolerances SAE JIC 37⁰ flare (AN)
Ease of installation BSPP and BSPT O-Ring Face Seal


Full Line of Instrument Valves Available.

PAC Stainless can provide you with the complete line of DK-Lok D-Pro valves for all of your flow control needs. Please contact us for a full catalog and detailed product specifications.

  • Ball Valves
  • Needle Valves
  • Metering Valves
  • Plug Valves
  • DBB Valves
  • Relief Valves
  • Gauge Valves

 DK-LOK® Fittings & Valves  DK-LOK® Line Card  High Pressure Fluid System Components  DK-LOK® Catalogs