Basic understanding about rising stem gate valve

The rising stem gate valve is usually made from cast or forged steel and is applied for crude oil, water, steam, gases and others nonabrasive media. A rising stem gate valve is designed with straight through bore type with rising stem, outside screw and yoke, bolted bonnet and stainless steel trim. The open and closed position of the valve is easily distinguished by the stem position. The wedge is replaceable without needing to remove the valve from the pipelines.

Rising stem gate valve is a kind of valve which prevents water flow and leakage when fully closed. When the valve is fully opened, it does not have any influence which disturbs water flow. Sealing is achieved by metal rings on the body and on the wedge. When the rings match with each other, they provide sealing. The wedge moves up and down by turning the revolving stem provided with a functional thread, enabling opening and closing of the valve.

With its rising feature, the user can detect from long distances whether the valve is open or closed and act immediately on the situation. Furthermore, the optional protection tube that is located at the top of the rising stem gate valve acts as a protection to the rising stem which prevents obstacles from contacting to the stem, and indicates whether the valve is fully opened or not. On the stem, accessories such as actuator, extension spindle, gearbox, chain wheel can be assembled.

The rising stem gate valve allows for two-way flow direction and used for closing or opening the medium flow. This type of valve can be installed in horizontal and vertical positions in the piping systems. It is widely applied in process industries such as Palm Oil and Refinery Plant, Food Industries, Petrochemical, Fire Protection System, Power Plant and Cooling System.

From the above statement, you may have a basic understanding about rising stem gate valve, and hope it could be of some help when you are choosing a gate valve. Or you can make a comparison with the non- rising type stem gate valve, then you can better know which type you want.