electric shut-off valve

NegotiableUpdate on 05/08

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Nature of the Manufacturer: Producers

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Overview

Commonly used electric globe valves include electric straight through globe valves, electric throttle valves, electric angle globe valves, electric DC globe valves, electric plunger globe valves, etc. Except for electric throttle valves, high-pressure options are generally not available for others.

Product Details

The principle of equipment closure is to rely on electric thrust to rotate the valve stem, so that the sealing surface of the valve disc is tightly adhered to the sealing surface of the valve seat, preventing the flow of the medium.globe valveOnly one-way flow of the medium is allowed, and there is directionality during installation. The structural length of the globe valve is greater than that of the gate valve, and the fluid resistance is high. During long-term operation, the sealing reliability is not strong.

Commonly used types include electric straight through globe valves, electric throttle valves, electric angle globe valves, electric DC globe valves, electric plunger globe valves, etc. Except for electric throttle valves, high-pressure options are generally not used for others.

1. Angle type; In the angle type, the fluid only needs to change direction once, so that the pressure drop through this valve is smaller than that of conventional structures.

2. DC type; In DC or Y-shapedelectric shut-off valveIn the middle, the flow channel of the valve body forms a diagonal line with the main flow channel, which reduces the degree of damage to the flow state compared to conventional methodsglobe valveIt needs to be small, so the pressure loss through the valve is correspondingly small.

3. Piston type: This form is conventionalelectric shut-off valveThe variation. In this valve, the valve disc and seat are usually designed based on the plunger principle. The valve disc is polished into a plunger and connected to the valve stem, and the sealing is achieved by two elastic sealing rings fitted on the plunger. Two elastic sealing rings are separated by a ring, and the sealing ring around the plunger is pressed firmly by the load applied to the valve cover by the valve cover nut.

advantage

1. The structure is simple, and manufacturing and maintenance are relatively convenient.

2. Small work schedule and short opening and closing time.

3. Good sealing performance, low friction between sealing surfaces, and long service life.

4. The structural forms of the globe valve body include straight through, straight through, and right angle. The straight through type is the most common structure, but it has the highest fluid resistance. Direct flow fluid has low resistance and is commonly used for fluids containing solid particles or high viscosity. Right angle valve bodies are often forged and suitable for globe valves with smaller diameters and higher pressures.

5. The friction force of the sealing surface during the opening and closing process is smaller than that of the gate valve, and it is wear-resistant.

6. Usually there is only one sealing surface, with good manufacturing process and easy maintenance.

7. Electric actuators are easy to operate.