The worm gear butterfly valve spool does not rotate and cannot move

In the inspection and repair, if it doesn't work, change it.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of the user's stove.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are changing rapidly, and the rankings may vary by time and region. For the latest ranking information, it is recommended to refer to industry reports, professional institutions or market research data for more detailed and accurate information.

To see if the stem is rotating, if the stem is not turning, it is easy to deal with, that is, the key at the junction of the stem and the handle is gone, buy a key and install it, if you are afraid that the stem will also turn, then it will be troublesome, that is to fix the positioning pin of the stem and the butterfly plate, if it is a hard seal, remove the valve, close the butterfly plate in place by hand, weld the connection between the valve stem and the butterfly plate, but you should also buy a valve back as soon as possible to replace it, because the valve stem may be stainless iron, or it may be 45 steel, these two materials are very brittle after welding, It's easy to break, maybe the valve stem will be broken that day, and then buy it for fear of affecting your construction, so it's better to buy a valve back early and prepare to change it.

Oh, I have also encountered this thing, you have to see if the valve stem is rotating, if the valve stem is not turning, it is easy to deal with, that is the key at the junction of the valve stem and the handle is gone, buy a key on the line, I am afraid that the valve stem also turns, then it is troublesome, that is the positioning pin of the fixed valve stem and the butterfly plate, if it is a hard seal to remove the valve, after closing the butterfly plate in place by hand, weld the connection between the valve stem and the butterfly plate, but also buy a valve back to replace it as soon as possible, because the valve stem may be stainless iron, or it may be 45 steel, These two materials are very brittle and easy to break after welding, maybe the valve stem will be broken that day, and then buy it again for fear that it will have an impact on your construction, so you should buy a valve back as soon as possible and prepare to change it.

It can be replaced, the valve plate (valve core) is indeed easier to break than the valve body, and the rubber sleeve is also easy to break, and it is worth it to see if it is worth it. I am the valve factory in Tianjin, and I am glad to serve you.

OK. What a butterfly valve.

Hello, the butterfly valve is inside the valve plate, your butterfly valve** is broken?

Just take down the valve core sealing ring, the sealing ring is pressed with a pressure plate, and the small hexagon screw is removed and taken down.

After loosening the screws on it, take out the spool and replace it with a new one.

Ask a professional plumber to loosen the stem bolts, add asbestos rope or raw material belt, and then tighten it.

The wear-resistant butterfly valve adopts three eccentric butterfly valves, with segmented shaft design, large flow capacity, small flow resistance, slow down wear and prolong the service life of the valve. The wear-resistant butterfly valve cover is designed to be hidden to avoid direct erosion damage by the medium. A special structure is provided in the anti-wear stub to protect the sealing surface of the butterfly plate from erosion in the fully open state.

The highly wear-resistant valve seat adopts a union structure, which can be easily replaced by the user according to the wear and tear of the valve, so as to reduce the production and use cost of the user. The valve operation adopts worm gear transmission, which reduces the operating torque of the butterfly valve, and the switch is flexible to protect the safe operation of the valve. Pneumatic or electric wear-resistant butterfly valves can be provided according to the needs of users.

It is suitable for a wide range of media, and is more suitable for air and air delivery, powder and granule media.

The spool of the butterfly valve is a round disc that rotates along the vertical shaft of the vertical pipe shaft bridge. When the plane of the valve plate is consistent with the axis of the pipe, it is fully open; When the plane of the gate judgment elimination plate is perpendicular to the axis of the pipe, it is fully closed.

The spool of the valve is a round valve plate, and Zhenrui electromechanical.

It is mainly analyzed from the structure of gate valve and butterfly valve

1. The gate valve is a valve that moves in the vertical direction of the gate along the center line of the channel, and the butterfly valve is a valve that rotates around a fixed shaft in the valve body with the butterfly plate.

2. From its structure, it can be seen that gate valves are mainly used for high-pressure valves, while butterfly valves have a simple structure and are mainly used for low-pressure valves.

3. In the wall pipe of the civil air defense structure, the fluid blocking and stability of the gate valve are much higher than that of the butterfly valve.

The biggest difference between the two is that the opening and closing parts of the butterfly valve are a plate, while the ball valve is a ball. The valve plate of the butterfly valve and the valve core of the ball valve are rotating around their own axis; The valve plate of the gate valve is lifted and lowered along the axis; Butterfly valves and gate valves can adjust the flow rate by the degree of opening; Ball valves do not facilitate this. The sealing surface of the ball valve is spherical, and the sealing surface of the butterfly valve is an annular cylindrical surface.

The butterfly valve is characterized by fast opening and closing speed, simple structure and low cost, but the tightness and pressure-bearing capacity are not good. The characteristics of ball valves are similar to those of gate valves, but due to the limitations of volume and opening and closing resistance, it is difficult to achieve a large diameter.

That's right, it's the valve plate.

Hot water system, are you talking about the disc or the seat? It is recommended that you choose carbon steel for the valve body, and the internal parts are made of stainless steel. If it is a butterfly valve, you can consider the PTFE seat, and if it is a butterfly valve, you can consider the metal seal seat.

Spool material? Do you mean the stem, disc, sealing surface?