Ball valve

pneumatically-operatedcontrolfor air

Halar (E-CTFE) is a durable copolymer of ethylene and chlorotrifluoroethylene. It is resistant to a wide variety of corrosive chemicals and organic solvents including strong acids, chlorine, and aqueous caustics. Halar has excellent abrasion resistance and electrical properties, extremely low permeability, and handles temperatures from cryogenic to 171° C (340° F), with continuous service to 149°C (300° F). Its brittleness temperature is -105° F. Severe stress tests have demonstrated that Halar is not subject to chemically induced stress cracking from strong acids, bases, or solvents. Only hot amines and molten alkali metals affect Halar. There is no known solvent for Halar below 250° F. Additionally, Halar is most likely the best known material for handling high concentrations of sodium hypochlorite. Asahi/America Halar systems are manufactured from unpigmented fluoropolymer E-CTFE resin. Their chemical structure, a one-to-one alternating copolymer of ethylene and chlorotrifluoroethylene, provides a unique combination of properties.In addition to superior chemical resistance and unmatched mechanical properties, Halar maintains its usefulness during exposure to cobalt 60 radiation at dosages of 200 megarads, and meets the fire requirements of UL-94 V-0 vertical flame tests. For these reasons, Halar is considered one of the most durable and versatile thermoplastics used in valves and piping systems. Applications ranging from the harshest of chemicals to the purest of hot DI water are ideal. No other known thermoplastic offers as much versatility in chemical resistance and strong mechanical properties as Halar.