The shut-off valve, also called the cut-off valve, is a kind of valve that uses zui extensively. It is popular because of the small friction between the sealing surfaces during the opening and closing process, which is relatively durable, the opening height is not large, the manufacturing is easy, and the maintenance is easy. Convenient, not only for medium and low pressure, but also for high pressure.
The closing principle of the shut-off valve is that, relying on the pressure of the valve bar, the sealing surface of the valve disc and the sealing surface of the valve seat are closely fitted to prevent the medium from flowing.
The shut-off valve allows only one-way flow of the medium and is directional when installed. The structural length of the shut-off valve is larger than that of the gate valve, and the fluid resistance is large. When the machine is operated for a long time, the sealing reliability is not strong.
The shut-off valves are divided into three categories: straight-through globe valve shut-off valves , right-angle globe valves and DC-type oblique globe valves.
The obvious advantages of zui are: During the opening and closing process, the friction between the valve flap and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant. The opening height is generally only 1/4 of the diameter of the seat channel and therefore much smaller than the gate valve. Usually there is only one sealing surface on the valve body and the valve flap, so the manufacturing process is better and easy to repair.
Nominal pressure or pressure rating of shut-off valve: PN1.0-16.0MPa, ANSI CLASS 150-900, JIS10-20K Nominal diameter or caliber: DN10～500, NPS 1/2～36†Connection method: flange, pair Suitable temperature for welding, threading, etc.: -196°C～700°C. Stop valve driving mode: manual, bevel gear transmission, pneumatic, electric, hydraulic, gas-liquid linkage, electro-hydraulic linkage valve body materials: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 ( 304), CF3 (304L), CF8M (316), CF3M (316L), Ti. The shut-off valve is made of different materials, which can be applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, etc. medium.
The closing principle of the shut-off valve is that, relying on the pressure of the valve bar, the sealing surface of the valve disc and the sealing surface of the valve seat are closely fitted to prevent the medium from flowing.
The shut-off valve allows only one-way flow of the medium and is directional when installed. The structural length of the shut-off valve is larger than that of the gate valve, and the fluid resistance is large. When the machine is operated for a long time, the sealing reliability is not strong.
The shut-off valves are divided into three categories: straight-through globe valve shut-off valves , right-angle globe valves and DC-type oblique globe valves.
The obvious advantages of zui are: During the opening and closing process, the friction between the valve flap and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant. The opening height is generally only 1/4 of the diameter of the seat channel and therefore much smaller than the gate valve. Usually there is only one sealing surface on the valve body and the valve flap, so the manufacturing process is better and easy to repair.
Nominal pressure or pressure rating of shut-off valve: PN1.0-16.0MPa, ANSI CLASS 150-900, JIS10-20K Nominal diameter or caliber: DN10～500, NPS 1/2～36†Connection method: flange, pair Suitable temperature for welding, threading, etc.: -196°C～700°C. Stop valve driving mode: manual, bevel gear transmission, pneumatic, electric, hydraulic, gas-liquid linkage, electro-hydraulic linkage valve body materials: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 ( 304), CF3 (304L), CF8M (316), CF3M (316L), Ti. The shut-off valve is made of different materials, which can be applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, etc. medium.
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