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Bundor - Butterfly, Gate, Check, Ball, Globe Valve Manufacturer, Supplier & Distributor
A brief summary of the advantages and disadvantages of gate valve
Posted by Bundor valve
What is gate valve? Gate valve is a kind of block valve, used to connect or cut off the medium in the pipeline.The opening and closing parts of the gate valve are driven by the valve stem and move in a straight line along the seat (sealing surface). So what are the advantages and disadvantages of gate valves? This article will give you a brief overview.
The advantages of gate valve
a.Fluid resistance is small--because the medium channel inside the gate valve body is straight through, the medium does not change its flow direction when flowing through the gate valve, so the fluid resistance is small.
b.The opening and closing resistance is small---because when the gate valve opens and closes, the direction of the gate plate movement is perpendicular to the direction of the medium flow, compared with the globe valve, the opening and closing of the gate valve is less force.
c.The medium flow direction is not restricted---the medium can flow from both sides of the gate valve in any direction, can achieve the purpose of use, it is more suitable for the flow direction of the medium may change in the pipelines.
d.The length of the structure is relatively short---because the the gate plate of the gate valve is vertically placed in the valve body, and the globe valve disc is horizontally placed in the valve body, so the length of the structure is shorter than the globe valve.
e.The sealing performance is good---the sealing surface is less eroded when it is fully opened.
The disadvantages of gate valve
a.The sealing surface is easy to damage---when opening and closing, there is relative friction between the two sealing surfaces in contact with the valve seat, which is easy to damage, thus affecting the sealing performance and service life.
b.The time of opening and closing is long, the height is large---because the gate valve must be fully opened or fully closed when opening and closing, the valve plate stroke is large, so the opening needs a certain space, the appearance size is high.
c.The structure is complex---the parts of gate valve are more, the manufacturing and maintenance is more difficult,and the cost is higher than the globe valve.
The advantages of gate valve
a.Fluid resistance is small--because the medium channel inside the gate valve body is straight through, the medium does not change its flow direction when flowing through the gate valve, so the fluid resistance is small.
b.The opening and closing resistance is small---because when the gate valve opens and closes, the direction of the gate plate movement is perpendicular to the direction of the medium flow, compared with the globe valve, the opening and closing of the gate valve is less force.
c.The medium flow direction is not restricted---the medium can flow from both sides of the gate valve in any direction, can achieve the purpose of use, it is more suitable for the flow direction of the medium may change in the pipelines.
d.The length of the structure is relatively short---because the the gate plate of the gate valve is vertically placed in the valve body, and the globe valve disc is horizontally placed in the valve body, so the length of the structure is shorter than the globe valve.
e.The sealing performance is good---the sealing surface is less eroded when it is fully opened.
The disadvantages of gate valve
a.The sealing surface is easy to damage---when opening and closing, there is relative friction between the two sealing surfaces in contact with the valve seat, which is easy to damage, thus affecting the sealing performance and service life.
b.The time of opening and closing is long, the height is large---because the gate valve must be fully opened or fully closed when opening and closing, the valve plate stroke is large, so the opening needs a certain space, the appearance size is high.
c.The structure is complex---the parts of gate valve are more, the manufacturing and maintenance is more difficult,and the cost is higher than the globe valve.