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DK-LOK® Certified Tube Fittings and Valves

DK-LOK® – Certified Tube Fittings and Valves You Can Trust

Since 1986, DK-LOK® has been a leading manufacturer of precision tube fittings and valves, trusted across critical industries for their leak-tight performance and exceptional quality. With rigorous manufacturing standards and ISO certifications, DK-LOK® products are engineered for reliability in demanding applications.

From instrumentation systems to process control and hydraulic operations, DK-LOK® components are used where safety and accuracy matter most. Their fittings and valves are interchangeable with major industry brands and are backed by decades of proven performance.

DK-LOK® Products Available at PipingNow

Tube Fittings: Male and female connectors, elbows, tees, unions, adapters, and more.
Weld & Flare Adapters: Tube-to-pipe butt welds, JIC flare unions, and reducing options.
Ferrules, Plugs & Caps: Front and rear ferrules, thread plugs, and sealing caps for complete system security.

Order DK-LOK® fittings from PipingNow for fast shipping and expert support. Questions? Email info@pipingnow.com or call 833.290.3800 today.

381 products

Female Connector Tube Fitting Stainless

DK-LOK® Female Connector, 1/4" X 1/4" 316 Stainless Steel Double Ferrule Tube Fitting DK-LOK #DCF-4-4N-S

SKU: 07-DCF-4-4N-S

$15.10

Male Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/2" Tube Adapter x 3/4" MNPT Straight 316 Stainless DK-LOK #DAM-8-12N-S

SKU: 07-DAM-8-12N-S

$18.82

Back Ferrule Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1" Rear Ferrule 316 Stainless DK-LOK #DFB-16-S

SKU: 07-DFB-16-S

$4.73

Female Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/4" Tube x 1/8" FNPT Straight 316 Stainless DK-LOK #DCF-4-2N-S

SKU: 07-DCF-4-2N-S

$10.71

Back Ferrule Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/2" Rear Ferrule 316 Stainless DK-LOK #DFB-8-S

SKU: 07-DFB-8-S

$2.05

Male Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/8" Tube Adapter x 1/8" MNPT Straight 316 Stainless DK-LOK #DAM-2-2N-S

SKU: 07-DAM-2-2N-S

$7.40

Female Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1-1/2" Tube x 1-1/2" FNPT Straight 316 Stainless DK-LOK #DCF-24-24N-S

SKU: 07-DCF-24-24N-S

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$191.83

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DK-LOK® 1" Tube x 1" Tube Socket Weld Connector Stainless Steel Double Ferrule Tube Fitting #DCSW-12-12-S

SKU: 07-DCSW-12-12-S

$48.87

Male Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 3/8" Tube Adapter x 1/8" MNPT Straight 316 Stainless DK-LOK #DAM-6-2N-S

SKU: 07-DAM-6-2N-S

$8.51

DK-LOK® 1" Tube x 1" Pipe Butt Weld Straight 316 Stainless DK-LOK #DCW-16-16P-S

SKU: 07-DCW-16-16P-S

$61.66

Port Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/2" Port x 1/2" Tube Adapter Straight 316 Stainless DK-LOK #DCP-8-S

SKU: 07-DCP-8-S

$14.28

Male Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 3/8" Tube Adapter x 1/4" MNPT Straight 316 Stainless DK-LOK #DAM-6-4N-S

SKU: 07-DAM-6-4N-S

$9.19

Female Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/2" Tube x 3/8" FNPT Straight 316 Stainless DK-LOK #DCF-8-6N-S

SKU: 07-DCF-8-6N-S

$19.51

Port Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/8" Port x 1/8" Tube Adapter Straight 316 Stainless DK-LOK #DCP-2-S

SKU: 07-DCP-2-S

$8.92

Bulkhead Female Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1" Tube Bulkhead x 1" FNPT Straight 316 Stainless DK-LOK #DCBF-16-16N-S

SKU: 07-DCBF-16-16N-S

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$161.57

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Male Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 3/4" Tube Adapter x 1/2" MNPT Straight 316 Stainless DK-LOK #DAM-12-8N-S

SKU: 07-DAM-12-8N-S

$22.67

Back Ferrule Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 3/4" Rear Ferrule 316 Stainless DK-LOK #DFB-12-S

SKU: 07-DFB-12-S

$3.06

Back Ferrule Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/4" Rear Ferrule 316 Stainless DK-LOK #DFB-4-S

SKU: 07-DFB-4-S

$1.16

Male Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 2" Tube Adapter x 2" MNPT Straight 316 Stainless DK-LOK #DAM-32-32N-S

SKU: 07-DAM-32-32N-S

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$541.15

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Female Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/8" Tube x 1/8" FNPT Straight 316 Stainless DK-LOK #DCF-2-2N-S

SKU: 07-DCF-2-2N-S

$10.84

Tube Union Elbow Stainless

DK-LOK® Union Elbow, 1/4" X 1/4" 316 Stainless Steel Double Ferrule Tube Fitting DK-LOK #DL-4-S

SKU: 07-DL-4-S

$21.05

Male Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 1/4" Tube Adapter x 1/8" MNPT Straight 316 Stainless DK-LOK #DAM-4-2N-S

SKU: 07-DAM-4-2N-S

$6.44

Female Connector Tube Fitting Stainless

DK-LOK® Female Connector, 1/4" Tube x 3/8" FNPT, 316 Stainless Steel Double Ferrule Tube Fitting DK-LOK #DCF-4-6N-S

SKU: 07-DCF-4-6N-S

$18.93

Female Connector Tube Fittings Stainless Steel Tube Fittings

DK-LOK® 3/4" Tube x 3/4" FNPT Straight 316 Stainless DK-LOK #DCF-12-12N-S

SKU: 07-DCF-12-12N-S

$35.71

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