Manual plug-in valve

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Manual plug valve, also known as manual knife gate valve, is a valve that tightly contacts and seals with the valve seat.

Here is a detailed introduction about it:

Composition: Mainly composed of frame, gate, screw, nut, handwheel and other components.

2. Working principle: Rotate the handwheel by hand to make the screw drive the gate to move up and down repeatedly in the horizontal direction, thereby achieving the opening and closing of the valve. There is a circular opening on the gate with the same diameter as the diameter. By opening and closing the gate, the circular mouth on the gate is completely separated or aligned with the diameter, thereby controlling the circulation and cutting off of the medium.

Features: Simple and compact structure, customized according to needs, excellent sealing, easy and flexible operation, small volume, smooth channel, low resistance, easy installation, and easy disassembly. Its valve body diameter has no grooves, the medium is unobstructed, and it has the characteristic of full diameter circulation, suitable for pipelines with powder particle media. There are two types of sealing structures: soft sealing and hard sealing. The sealed valve seat is designed as a movable structure with anti wear and automatic compensation functions, and has a long service life.

4. Classification: It can be divided into one-way manual plug valves and two-way manual plug valves; According to the material, it can be divided into stainless steel manual plug valves and carbon steel manual plug valves; According to the shape of the flange, it can be divided into circular manual plug valves and square manual plug valves.

5. Installation and maintenance: Before installation, check the valve chamber and sealing surface. No dirt or sand particles are allowed to adhere. The bolts of each connecting part should be evenly tightened, and the packing part should be tightly compressed to confirm the sealing performance and flexibility of the gate. During installation, it is necessary to verify the valve model and connection size, pay attention to the flow direction of the medium, and reserve the necessary space for valve drive. During use, each transmission component should be regularly inspected and lubricated for maintenance.

Application industry: Often used in conjunction with unloading devices or silos, widely used in industries such as metallurgy, carbon, chemical, building materials, food, hygiene, and medicine.

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