Product Description Plasson WRAS 3407 Compression Stop Tap Plasson mechanical fittings are design to high performance pipe jointing and a long system life. These high quality fittings are very durable and easy to use. Plasson mechanical fittings are constructed of WRAS approved materials, allowing use on potable water systems. It has been approved by a wide range of European and global agencies for use on potable water systems. The fittings are designed to withstand working pressures of up to 16bar, and also include valves which allow the regulation of flow.For above and below ground use. WRAS Approved BS 5433 Type Available in 3 Sizes; 20mm 25mm 32mm