They are used for addressing the problems of flow capacity and pressure loss in pipelines. Gate valves have a one-piece body with large openings that allows higher flow rates than globe or globe-check valves, but this is offset by the fact that there can be significant pressure drop across these valves due to high water hammer potential. Gate valve is a widely used device in the pipeline industry that offers good efficiency and positive shutoff. Most of these valves are made from Cast Iron, with forged steel gate. The most common size available is 20" -100".Gate Valve is mainly used on service lines as an intermediate stop between street main and fire hydrant. It is also used for regulating water flow in supply pipe lines and is used for shutting off the water from fire hydrant. Gate valve is a straight-through type that does not have any angle between the spindle bushing and stem. They are mainly available with male or female threaded ends, but they can also be manufactured with socket welding end connection. Gate Valve life expectancy is more than 25 years. Gate Valve is available with different seats such as: flat face, vulcanite, rubber faced, brass etc. The size of Gate Valve ranges from 2" up to 24".Normally the bigger size valves are designed for higher pressure service line applications and smaller sizes for low pressure domestic application. Most of the Gate Valves are equipped with a gasket to have a good seal, but in some cases no seat or gasket is required but for that purpose it is supplied separately. Gate Valve ensures positive shut off and normally they are made with WOG rating of 250 lbs., but can be made up to 400 lbs as per customer drawing. With plumbing gate valves, you will be able to control water flow in your home without any problems.