Gate Valves Questions
Product information
- What is the difference between the inner thread type and the outer thread type of gate valves? In addition, what should I check to confirm each product?
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・ Inner thread type
This type has a structure in which the threaded part is provided inside the valve (the part that comes into contact with water).
Since the height is lower than the outer thread type, this type has an advantage that the height of the valve chamber can be lowered.・Outer thread type
This type has a structure in which the threaded part is provided outside the valve (the part that does not come into contact with water).
Because of the advantage that maintenance of the threaded part and parts replacement can be done easily, the outer thread type is used when the opening and closing frequency is high (electric operation, etc.).
Use condition
- Do you have a gate valve that can be used for flow rate regulation of fluid?
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We do not recommend using a gate valve for flow rate regulation.When a gate valve is used for flow rate regulation (intermediate opening), the disc may continue to hit against the seat, resulting in seat wear and seat leakage.
We recommend a globe valve for flow rate regulation.
Flow direction
- Does a gate valve have a flow direction?
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There is no restriction on the flow direction of a gate valve.
However, note that the flow direction of fluid is restricted when a vent hole is provided.