DK-Lok fittings and valves are manufactured to the most stringent industry standards. As a result, DK-Lok is one of the most certified tube fitting and valve manufacturers in the world. Our guarantee is a leak-tight seal in process, power, and instrumentation applications. Our commitment is to provide our clients reliable products and unparalleled customer service. As your fittings and valve supplier, it’s our responsibility to bring increased value to your company.

DK-Lok’s staff is committed to providing you with unparalleled customer service. Through our quality valve and fitting products, customer service, and pricing DK-Lok is able to create a true value for you, our clients. DK-Lok Fittings and Valves looks forward to creating a solution for whatever need you may have.

So many reasons to make the switch to DK-Lok Valves & Fittings
  • Highest Quality Products
  • Reliable, Leak-Free Connections
  • Broad Product Line
  • Very Attractive Pricing
  • Interchangeable with Swagelok
  • Exceptional Service & Support


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.

Dk Lok S

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.


Jual instrument fittings dan valves: swagelok, superlok, hoke, gyrolok, let-lok, ham-let, fitok, unilok, powerlok, fd-lok, duolok, dk-lok, v-lok, s-lok, hylok, cajon.