Founded in 2001 by Mr. Charles C. Hansen III, HANTEMP Controls is an innovative manufacturer of stainless steel ball valves and other controls for ammonia refrigeration systems headquartered outside of Chicago, Il. With state-of-the-art materials and broadening manufacturing processes, HANTEMP Controls continues its founder's tradition of quality, originality, and honesty. All of the HANTEMP products - including the COBRA-NECK® Ball Valves, EZWLD Flanges, "SEE-SWITCH"® Refrigerant Float Switches, QSV Quick Service Valves, and SCV Inline Check Valves - are constructed of stainless steel, built for longevity, and intended for compatibility with all modern refrigerants including ammonia. Products are designed, tested, and available for prompt delivery from the factory in Westmont, IL.