This 4″ Sch 80 CPVC Pneumatic Ball Valve, VITON, Single Acting, (FNPT x FNPT) is a true union ball valve with a pneumatic actuator on top for automatic control when compressed air is applied. the penumatic actuator opens when compressed air is applied to it but closes due to internal springs. a male adaptor, threaded pipe or pipe nipple connects to this part. CPVC is a higher temperature version of PVC and has better chemical resistances. VITON seals provide increased temperature resistance than EPDM seals and recommended for exposure to oils, gasoline and aggressive chemicals. Have a question? Check our technical resources section or give us a call and take advantage of our years of experience.