Advantages And Disadvantages Of Goole Valve

Advantages and Disadvantages of Goole Valve

Globe Valve refers to the valve whose closing part (disc) moves along the center line of the valve seat. According to this movement of the valve disc, the change of the valve seat port is proportional to the valve disc stroke. Because the opening or closing stroke of the valve stem of this type of valve is relatively short, and it has a very reliable shut-off function, and because the change of the valve seat port is in direct proportion to the stroke of the valve disc, it is very suitable for flow adjustment. Therefore, this type of valve is very suitable for cutting off or regulating and throttling.

Advantages:

①During the opening and closing process, the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant.

②The opening height is generally only 1/4 of the valve seat passage, so it is much smaller than the gate valve;

③Usually there is only one sealing surface on the valve body and disc, so the manufacturing process is relatively good and easy to maintain;

④Because the filler is generally a mixture of asbestos and graphite, the temperature resistance level is higher. Generally steam valves use stop valves.

Disadvantages:

①Because the flow direction of the medium through the valve has changed, the minimum flow resistance of the stop valve is also higher than that of most other types of valves;

②Due to the longer stroke, the opening speed is slower than that of the ball valve.