
Secure connections and accurate flow control are essential to a reliable instrumentation system. Bob Davis Sales offers DK-LOK tube fittings, valves, manifolds, and related components for oil and gas process-control applications.
Contact us with your connection type, material, pressure requirements, and preferred configuration. We’ll review the options, confirm availability, and arrange pickup or shipping.

Below are several DK-LOK product categories we supply. Contact our team for additional options or help locating a specific component.
Connect tubing securely with single- and double-ferrule fittings offered in multiple materials, sizes, and configurations.
Join tubing to threaded or welded process connections with fittings designed for a variety of instrumentation layouts.
Open, close, or redirect flow with compact valves built for reliable shutoff across oil and gas systems.
Make precise flow adjustments or isolate instrument lines with needle valves available for general and severe-service conditions.
Prevent backflow and protect connected lines from excess pressure with valves designed for critical system functions.
Simplify instrument connections and flow control with compact manifolds designed for dependable sealing and system isolation.
Choosing DK-LOK through Bob Davis Sales gives you access to product knowledge, regional inventory, and assistance throughout the ordering process.
Match fittings, valves, and manifolds to your tubing, media, pressure range, and instrumentation setup.
Sort through materials, end connections, valve styles, and other technical details with guidance from our team.
With locations in Kilgore, Jacksboro, and Shreveport, we make DK-LOK products easier to access across three states.
Return to Bob Davis Sales for replacement components, repeat orders, and changing instrumentation requirements.