SigmaHLR offers a full Instrumentation Product Range. The range includes but not limited to Needle Valves, Ball Valves, Check Valves, Thermal Relief Valves, Flow Control Valves, Cylinder Plug Valves, and a few others. The product range is offered in various sizes, pressures, and configurations. For more information on these products or to make a purchase, please contact SigmaHLR Sales at 972-355-3047.

Contact our Sales Team at

Don’t See What You Need?

Contact Us Now

Above you have found our core product line that fits numerous applications. In the case of which you are in need of a specific material, temperature rating, or other technical specification, please contact us to see our other offerings we provide to fulfill your needs.


Available Seals: Viton, Urethane, Arctic, Kalrez, Alfas, and Teflon


Exotic Materials Available include: Inconel, Hastelloy, Monel, and Duplex Stainless Steel