Total Valve Systems, Inc. is a contract manufacturer, distributor, and service company based in Broken Arrow, Oklahoma, US. Established in 1983, the company has grown to employ 51-100 people and operates from a 70,000 sq. ft. headquarters on 10 acres. They specialize in a comprehensive range of industrial valves and related components, including Pressure Relief Valves, Control Valves, Ball Valves, Butterfly Valves, Check Valves, Gate Valves, Globe Valves, Excess Flow Valves, Slurry Valves, Plug Valves, Diaphragm Valves, Actuators, Rupture Discs, Flame Arrestors, Gauges, Valve Packing, and Liquid Level Indicators. Total Valve Systems offers extensive in-shop and on-site repair services, specialized machining (CNC, prototype, wire EDM), engineering services, and a sophisticated Flow Lab for valve performance testing. They are certified with ASME, CE, UL, and ISO 9001:2015, along with VR, UV, and NB Certificates of Authorization. With a strong national presence across multiple US states and international offices in Shanghai, China, Jordan, India, Singapore, and The Middle East, they serve critical industries such as Power, Pipelines & Gathering, Refineries, Chemical Processing, and Gas & Liquids Storage. They are also a stocking distributor for Crane ChemPharma and offer their patented LiftTrack™ PSV lift event indicator and the 6820 TRV (Total Relief Valve).
Tri-State Instrument Laboratory, established in 1959, is a Tulsa, US-based company operating as a manufacturer, distributor, and service provider of electrical and electronic instrumentation. With over 60 years of experience, the company employs 11 to 50 people and specializes in sales, service, calibration, and distribution. They are a factory-authorized center for modifying Hoyt and Simpson digital and analog meters and offer over 15 calibration services. Tri-State Instrument Laboratory manufactures voltage dividers and motor rotation and phase sequence indicators, alongside their own handcrafted TSW line of products. They also distribute a wide range of electronic test equipment and components, including megohmmeters, process calibrators, clamp meters, thermometers, multimeters, panel meters, ammeters, transformers, DC shunts, switchboard meters, power transducers, oscilloscopes, data loggers, and power quality analyzers. The company distributes products from leading manufacturers such as Amprobe, AEMC, Fluke, Extech, Hoyt, Ideal, Simpson, ThermoProbe, and Instrument Transformers Inc., catering to diverse industry needs with a focus on quick turnaround and continuous improvement.