Forums > General Discussion > What is The flow path of the gate valve body?
| What is The flow path of the gate valve body? | |
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| Posted: 18 Jul 2022 04:12 UTC | Post #1 |
| Kaiwen Deck & Engine |
Registered Total Posts: 6 |
| The flow path of the gate valve body can be divided into two types: full-bore type and reduced-bore type. The minimum channel diameter of the full diameter gate valve body is specified in the standard. The diameter of the flow aperture is smaller than that of the full-diameter gate valve channel, which is called the reduced diameter type. The flow channel is tapered, a kind of non-uniform diameter reduction. The diameter of the inlet end of this type of valve is basically the same as the nominal diameter, and then gradually narrows to the minimum at the gate valve seat. The gate valve adopts a reduced diameter flow channel (whether it is a tapered tube-shaped non-uniform diameter reduction or uniform diameter reduction), its advantage is that the valve of the same specification can reduce the size, opening and closing force, and torque of the gate; its disadvantage is the flow resistance. Increase, pressure drop, and energy consumption increase, so the shrinkage hole should not be too large. For the non-uniform diameter reduction of the tapered tube shape, the ratio of the inner diameter of the valve seat to the nominal size is usually 0.8 to 0.95. For a reducing valve with a nominal size smaller than DN250, the inner diameter of the gate valve seat is generally one step lower than the nominal size; for a reducing valve with a nominal size equal to or greater than DN300, the inner diameter of the gate valve seat is generally two steps lower than the nominal size. The uniform reduction type is usually used in large-diameter low, medium pressure, or high-pressure valves, and the size of the reduction should be in accordance with the relevant standards. Gate Valve：https://www. kwvalvescontrol.com/ Gate-Valves | |
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