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The working principle of the cut-off valve

- Jul 12, 2018 -

Cut-off valve, also known as Jummen, is the most widely used a valve, it is widely popular, because of the opening and closing process of the sealing surface friction between the small, relatively durable, open height is not easy to manufacture, maintenance convenience, not only applicable to the middle and low pressure, but also applicable to high pressure.

The closing principle of the cut-off valve is to rely on the pressure of the valve to make the valve seal face close to the seat sealing surface and prevent the media from circulating. The cut-off valve only allows the media to flow one-way, the installation has directional. The cut-off valve structure length is larger than the gate valve, simultaneously the fluid resistance is big, the long-term operation, the sealing reliability is not strong.