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Where Is Soft Seated Or Hard Seal Gate Valve Applicable?

Author: name From: name Modify: Jun. 17, 2020
Jul. 13, 2020
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As a Gate Valve Supplier, share with you. 

The general gate valve will leak or rust after long time use. The soft seated gate valve overcomes the defects of the general valve such as sealing and rust. The soft sealing gate valve produces a compensation effect of micro-elastic deformation and achieves a good sealing effect. , The valve has the characteristics of light switch, reliable, memory and long service life. It can be widely used in water, sewage, construction, petroleum, chemical, food, pharmaceutical, textile, electric power, shipbuilding, metallurgy, and energy systems. There are a series of pipeline adjustment and closing devices. But what is the main difference between hard sealing gate valve and soft sealing gate valve? The editor of Xiangyu Valve will introduce to you in detail!


Gate Valves are suitable for flow regulation. Because the pressure loss of the Gate Valve in the pipeline is relatively large, the robustness of the Gate Valve plate to withstand the pressure of the pipeline medium when closing should also be considered. In addition, the working temperature limit of the elastic seat material must be considered at high temperatures. The structure length and overall height of the Gate Valve are small, the opening and closing speed is fast, and it has good fluid control characteristics. The structure principle of the Gate valve is most suitable for making large-diameter valves. When the Gate Valve is required for flow control, the most important thing is to correctly select the size and type of the Gate Valve so that it can work properly and effectively.

DIN F5 Gate Valve

soft seated gate valve

The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals and radioactive media. Mainly cut off and throttle the pipe. The Gate Valve opening and closing part is a disc-shaped Gate Valve, which rotates around its own axis in the valve body, so as to achieve the purpose of opening, closing or adjusting.

Generally, in throttling, adjustment control and mud medium, the structure length is required to be short and the opening and closing speed is fast. Gate Valve is recommended for low pressure cut-off.

Gate Valve can be used when there are two-position adjustment, narrowing channel, low noise, cavitation and gasification, small leakage into the atmosphere, and abrasive media.

Throttle adjustment under special working conditions, or strict sealing requirements, or severe wear, low temperature (cryogenic) and other working conditions when using Gate Valve, need to use special design metal seal with adjustment device for three eccentric or double eccentric special Gate Valve.

The Gate Valve is suitable for fresh water, sewage, sea water, salt water, salt water, steam, natural gas, food, medicine, oil and all kinds of fresh water, sewage, sea water, brine, steam, natural gas, food, medicine Acid and alkali and other pipelines.

The soft seal eccentric Gate Valve is suitable for bidirectional opening and closing and adjustment of the ventilation and dust removal pipeline, and is widely used in gas pipelines and water channels in metallurgy, light industry, electric power, and petrochemical systems.

The metal-to-metal line sealed double eccentric Gate Valve is suitable for gas, oil, acid and alkali pipelines such as urban heating, gas supply, water supply, etc., as a regulating and throttling device.

In addition to being used as a program control valve for a large pressure swing adsorption gas separation device, the metal-to-metal face sealed triple-eccentric Gate Valve can also be widely used in petroleum, petrochemical, chemical, metallurgy, electric power, and other fields. It is a good substitute for gate valves and globe valves.

so what different from soft seal gate valve and hard seal gate valve?

Soft sealing: One side of the seal is a metal material, and the other side is a flexible non-metal material, which is called "soft sealed". Good sealing performance, but not resistant to high temperature, easy to wear, machinery, etc.

Hard seal: Both sides of metal material or other hard materials are called "hard seal". Poor sealing performance, but high temperature resistance, wear resistance, and good mechanical properties.

Soft sealed is the sealed side, one side is the low hardness of the material. Generally speaking, the soft sealed seat uses non-metallic materials with certain strength, hardness and resistance temperature characteristics. The sealing performance is good, and it can achieve zero leakage, but the life and temperature Poor adaptability.

The production of sealing metal has relatively poor sealing performance, although the manufacturer claims that it can achieve zero leakage.

The advantage of soft seal is good sealing performance, but the disadvantage is easy aging, wear and short service life. The hard seal has a long service life, but the relative proportion of the seal is the soft seal. These two kinds of seals can complement each other, and the seal on the soft seal is better, but now the sealed seal can also meet the corresponding requirements.


Our company also has soft seal gate valve for sale, please contact us.