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Tube Fittings

Our Complete range of products are and HY-LOK TUBE FITTINGS.


Committed to providing high quality fluid system control products, Southwest Process Controls is the exclusive distributor of Hy-Lok Tube Fittings for all of Texas. Hy-Lok Tube Fittings have a 30-plus year history of leak-free performance during the most demanding applications. The Hy-Lok Tube Fitting has been tested by numerous third parties and end users. One of the premier worldwide oilfield service companies tested and approved Hy-Lok Tube Fittings for use downhole. That company only allows one other fitting brand to be used downhole. One of the premier worldwide wellhead manufacturers has also successfully tested Hy-Lok Tube Fittings in various materials, shapes, and sizes. A large US refinery tested Hy-Lok Tube Fittings and two other brands. Hy-Lok had zero leaks, outperforming the other two brands. Hy-Lok Tube Fittings have also been successfully tested to the standards of ASTM F1387. We offer the entire Hy-Lok line, ranging in size from 116" to 2" OD and all alloys including 316 stainless steel, brass, monel, Inconel 600, Inconel 625, Inconel 825, Inconel 925, Hastelloy, Titanium, and others. We can provide tube fittings using custom materials depending on your requirements. As an exclusive Hy-Lok distributor, we sell a variety of end connections including Tube to Tube Union, Union, Tube to Male Pipe, Tube to Female Pipe, Sub Tube Connector, Tube to AN Tube, Tube to SAE, Tube to Weld End, and Plug and Cap. These only require low torque installation, with positive leak-free seals that allow for frequent assembly or reassembly. Our larger tube fittings can be easily installed using EZY-MAT hydraulic assembly tools specifically designed for Hy-Lok products. Focused on quality control and performance, our products are used in an array of industries including oil & gas, chemical processing, shipbuilding, aerospace, military, semiconductor, and power generation.

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  • Houston, TX 77061, United States