The Brass Lever Operated Ball Valve Press Fit Copper x F.I. BSP Lead Free Watermark is a press fit ball valve designed for fast installation and reliable isolation in copper press plumbing systems. A simple quater turn shut off control making it easy to isolate water supply lines. Maximum pressure rating of 2500 kPa. Suitable for; potable water plumbing systems, copper press installations and general water line isolation .