Fitvalf U-PVC Double Threaded Union's General Features; * It is long-lasting, durable and environmentally friendly. * The color, smell and taste of the water it carries do not change. * It is leakproof. * It is provided easy installation and it is designed to be used with the handle of our 63mm Fitvalf ball valve. There are 3 slots on the union for handle use. It could be opened and closed easily. - O-ring: EPDM. - Ø63 Double-sided threaded union model is designed for use with the handle of Fitvalf ball valve. USAGE AREAS : Union is an internal threaded round ring nut that connects two pipes that cannot be rotated. Union is used in areas such as plumbing, water, etc. to be connecting the ends of pipes to each other. The operating pressure is PN16 in all sizes of our product from 1/2inch to 4inch. Usage Area: *Pool Systems *Construction Systems - Clean Water