Gost Globe Valve Supplier introduces you to this article.
What is the role of the globe valve
Gost globe valve is used to cut off the flow of medium. The globe valve is suitable for occasions that need to be opened frequently. The most commonly used is in chemical production.
The sealing parts of the globe valve are the valve disc and the valve seat. In order to make the globe valve close tightly, the mating surface of the valve disc and the valve seat should be ground or gaskets can be used. Corrosion and wear-resistant materials such as bronze and stainless steel can also be inserted on the sealing surface . The valve disc and the stem of the globe valve are connected movably to facilitate the tight fitting of the valve disc and the stem.
The advantages and disadvantages of China Famous Globe Valve
The lifting and lowering of the valve disc of the globe valve is generally controlled by the stem. The upper part of the stem of the globe valve is a hand wheel, and the middle part is the thread and packing sealing section. The role of the packing is to prevent the medium inside the valve body from leaking along the stem.
The main function of the stop valve in the chemical pipeline is to cut off or connect the fluid. The flow rate of the stop valve is better than that of the gate valve, but the stop valve cannot be used to adjust the pressure and flow for a long time. Otherwise, the sealing surface of the stop valve may be corroded by the medium Destroy the sealing performance.
The shut-off valve can be used for water, steam, air shrinkage and other pipelines, but it should not be used for medium pipelines with high viscosity, easy coking and easy precipitation, so as not to damage the sealing surface.
The working principle of the globe valve is that the valve flap of the globe valve moves vertically along the center line of the valve seat, and the valve disc sealing surface of the globe valve and the sealing surface of the valve seat are closely adhered to each other by the spinning of the valve stem thread, so Media circulation.

Advantages of globe valve:
The working stroke of the globe valve is small, and the opening and closing time is short.
The globe valve has good sealing performance, low friction between sealing surfaces and long service life.
The shut-off valve has better adjustment performance.
Disadvantages of globe valve:
The installation length of the globe valve is large, and the resistance of the medium flow is large.
The structure of the globe valve is relatively complex, and it is difficult to manufacture and maintain.
The fluid of the stop valve passes through the valve seat from bottom to top, and the resistance is large, and the force required when opening and closing is large.
Globe valves are generally not suitable for media with particles, high viscosity, and easy coking.
Shut-off valves are often used in pipelines that need to be fully opened and closed, and steam pipelines are more commonly used. The connection between the shut-off valve and the pipeline can be a threaded type or a flange type.