Airpath Instrument Co

Founded in 1991, Patriot Machine Inc. is an aircraft manufacturer and a supplier of both commercial and defense aerospace products that include simple to complex prototypes and production parts in both aluminum and hard metal. Located in St Charles, Mo., it is a certified suppler of products to various companies, such as Bell Helicopter Textron, Embraer, General Dynamics, Gulfstream, Lockheed Martin, Northrop Grumman and The Boeing Company. Patriot Machine Inc.'s capabilities include deep pocket milling, complex closed-angled contoured features, precision holes of all orientations, sub-assembly and many more.

Essex Manufacturing is a full service component engineering and manufacturing facility. Based in St. Louis, Mo., the company offers a range of components, such as specialty valves and quick disconnects, pilot flight control stick grip assemblies and hydraulic surge suppressors, to name a few. It also possesses a complete anodize department that supplies chromic anodize, type III finish seals, hardcoat, electropolish, penetrant inspection and other special services. Essex Manufacturing is ISO 9001:2008 certified and is authorized by the American Society of Mechanical Engineers.

Operational since 1947, Essex Industries designs and manufactures products for defense, aerospace, emergency medical, fluid power, health care, petrochemical and automotive industries. Its range of products includes pressure regulating equipment, pneumatic and hydraulic controls, cryogenic systems, fuel and environmental transfer control valves, avionics cooling blowers, actuators and specialty components. The company operates Alar Products, Essex Cryogenics and Dolphin Systems. Essex Industries also manages a full-service manufacturing facility that provides engineering, machining, assembly, processing and anodizing capabilities. In addition, the company offers regulators and fuel pumps and filters under the SX Performance brand. Essex Industries offers oxygen concentrators and liquid oxygen in ambulatory, portable and stationary units for homes, hospitals and emergency egresses.