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Highest Quality Fittings & Valves with World-Class Service. The most formidable competitor of Swagelok brand fittings, DK-Lok is the best value on the market. DK-Lok has all the industrial qualifications & certifications, even nuclear certification, and yet their products are offered at very economical costs. Best Value – Period.

• Single & Dual Ferrule Designs
• Stainless Steel, Carbon Steel, Brass, PTFE, Monel, Hastelloy, and other exotic materials
• Instrument Tube Fittings
• Industrial Pipe Fittings
• Instrument Valves

Shop a selection of our DK-LOK products online.