Jyoti Plastic Works Pvt Ltd offers Ball Valves with Teflon Coated Diaphragms. Jyoti Plastic Works Pvt Ltd is an ISO 9001: 2000 accredited company. The Ball Valves with Teflon Coated Diaphragms is generally used for fluid controls in corrosive environment in horizontal pipe lines where frequent open/shut of valves is required to be done.