Truelok is headquartered in Ontario, California, USA. We manufacture a line of Ultra High Purity fittings, springless diaphragm valves, ball valves, check valves, toggle valves, needle valves, as well as double ferrule compression tube fittings, and welded bodies.Truelok products are used in the semiconductor and instrumentation industry, for applications in gas delivery systems. We have representatives worldwide through Distributors and direct sales to OEM customers. We deliver high-quality, reliability, and excellent customer service. Truelok is committed to customer education through product presentation trainings to discuss manufacturing, custom designs and specific applications. Truelok specializes in critical semiconductor applications, clean room applications, gas panel cabinet manufacturing, analytical instrumentation, cryogenics, biopharmaceutical, and Aerospace applications.We can provide the support your facility needs, such as facility support replenishing inventory and filled engineering support. A friendly Truelok Representative is waiting to assist you with your inquiry.