How is the model of the soft seal gate valve indicated?

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 users.

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 evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

Hard seal: The seal pair is called a metal material or other hard material on both sides"Hard sealed".This kind of seal has poor sealing performance, but it is resistant to high temperatures, wear, and has good mechanical properties.

Such as: steel + steel; Steel + Copper; steel + graphite; steel + alloy steel; (The steel here may also be cast iron, cast steel, alloy steel may also be hardfacing, sprayed alloys).

Soft seal: The two sides of the sealing pair are made of metal material on one side and the other side is an elastic non-metallic material"Soft seal".This kind of seal has good sealing performance, but it is not resistant to high temperature, easy to wear, and has poor mechanical properties.

Such as: steel + rubber; Steel + PTFE [wiki] polyethylene [wiki]; Wait.

Generally speaking, the soft seal seat is made of non-metallic materials with certain strength, hardness and temperature resistance, with good sealing performance and zero leakage, but the life and adaptability to temperature are relatively poor.

Hard seals are made of metal and have relatively poor sealing performance, although some manufacturers claim to have zero leakage.

Soft seals can not meet the process requirements for some corrosive materials, and hard seals can solve them!

These two seals can complement each other, the soft seal is relatively good in terms of tightness, but now the tightness of the hard seal can also meet the corresponding requirements!

The advantage of soft sealing is good sealing performance, and the disadvantage is that it is easy to age, wear and tear, and has a short service life.

Hard seals have a long service life, but the sealing performance is relatively worse than that of soft seals.

Generally, ordinary gate valves generally leak and are easy to rust, and the company introduces foreign advanced technology to produce soft seal gate valves. It overcomes the defects of poor sealing, elasticity fatigue and easy rust of general gate valves. The soft seal gate valve is a replacement product of the traditional gate valve, which uses the elastic ram to produce a slight amount of deformation to compensate for the effect of good sealing, and the valve has the significant advantages of light switching, reliable sealing, good elastic memory and long service life.

The valve body and bonnet of the soft seal gate valve are cast by precision casting method, which is formed at one time, and is no longer machined at all, and does not use sealing copper rings, saving non-ferrous metals;

There is no pit at the bottom of the soft seal gate valve, no accumulation of slag, and the failure rate of the gate valve opening and closing is low;

The soft seal lined valve plate has a uniform size and strong interchangeability.

Summary. How does the soft seal gate valve represent on the diagram.

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Hello, I am happy to serve you and give you the following answers: when there is a problem with the soft seal opening and leakage, the code name is SE; When there is a problem with the hard seal, it is codenamed SH. 1. Reasons for the problem of soft sealing1

Aging damage of seal material: Soft seals are usually rubber materials, and the aging of rubber will cause the seals to become brittle and hard, which will lead to butterfly valve leakage. 2.

Improper installation of the seal: Improper installation of the soft seal, such as an incorrect installation angle, can lead to leakage of the butterfly valve. 3.

Rough surface of butterfly valve body: The surface of the butterfly valve body is uneven, which is prone to grooves, which leads to butterfly valve leakage. Second, the solution to the problem of soft sealing and the simple practice step 1

Check the seal material: Check if the soft seal has become brittle or hard, and if so, replace it with a new one immediately. 2.

Check the installation of the soft sealing ring: check whether the soft sealing ring is installed correctly, if not, adjust the installation angle in time. 3.

Butterfly valve is a very commonly used fluid control valve, which is characterized by large change in diameter, large change in flow rate, flexible operation, simple structure and low cost. Its sealing part is generally composed of soft seal and hard seal, the soft seal is generally a rubber ring, and the hard seal is generally a metal side washer.