Soft seated gate valves in ductile iron GGG50 with EPDM lined wedge and socket ends are suitable to be installed directly on HDPE pipes for water supply systems. These valves are suitable for drinking water applications, being coated with epoxy powder painting, not toxic. This kind of gate valves are inside screw, with non rising stem in AISI 420, wegde EPDM vulcanized and sliding rails on the body, for a low friction movement. The gate valves for HDPE pipe are equipped with a brass compression ring that allows installation on the pipeline, locking the pipe and avoiding any movement. The soft seated gate valves are full bore, have no pressure drops, with the EPDM covered wedge that is not affected by corrosion and that doesn’t need any maintenance. In case of need, orings on the stem can be replaced with the valve in the pipeline and in complete open position. Soft seated gate valves in ductile iron can be installed above or under the ground level, or in chambers. Standard execution is by handwheel, on demand request of cap top, extension spindle, protective tube, T key and surface box for typical requirements in water supply and distribution systems.