Fig. 70 Gruvlok SlideFLEX coupling is a lightweight, high-performance, ready-for-installation coupling.The slide action eases assembly time and effort and the patented gasket provides four separate sealing surfaces for added protection. The SlideFLEX fig 70 coupling is designed to be used with roll groove or cut groove steel pipe, grooved light wall pipe, Gruvlok grooved-end fittings, and valves. It allows for pressures between full vacuum up to 1000 psi on roll or cut grooved carbon steel standard wall pipe.