Soft seal gate valve, also known as elastic seat gate valve, is a manual valve used to connect pipeline medium and switch in water conservancy project. The structure of the soft sealing gate valve is composed of valve seat, valve cover, gate plate, gland, stem, hand wheel, gasket and inner hexagon bolt. The inner and outer surfaces of the valve flow channel are sprayed with process electrostatic powder. After being baked in a high-temperature furnace, the smoothness of the entire flow channel mouth and the wedge-shaped groove inside the gate valve is guaranteed, and the appearance also gives people a sense of color. Soft-sealed gate valves are usually blue-blue highlight for general water conservancy, and red-red highlight is used for fire protection pipelines. And by the user 's favorite, it can even be said that the soft seal gate valve is a valve manufactured for water conservancy.
Types and uses of soft sealing gate valve:
As a common manual switch valve on the pipeline, the soft seal gate valve is mainly used in waterworks, sewage pipelines, municipal drainage projects, fire pipeline projects, and industrial pipelines on the slightly non-corrosive liquids and gases. And can be customized according to the situation of field use, such as rising stem soft seal gate valve, non-rising stem soft seal gate valve, extended rod soft seal gate valve, buried soft seal gate valve, electric soft seal gate valve, pneumatic soft seal gate valve, etc.
What are the advantages of soft sealing gate valve:
1.The advantages of soft seal gate valve first from its cost, generally,most of the soft sealing gate valve series adopt ductile iron QT450. The cost accounting of the valve body will be much more affordable than the cost of cast steel and stainless steel. This is quite affordable relative to the bulk procurement of the project, and it is in the case of quality assurance.
2.Secondly, from the performance characteristics of the soft seal gate valve, the gate plate of the soft seal gate valve is lined with elastic rubber, and the internal structure is wedge-shaped. In the use of the top hand wheel mechanism, the screw is lowered to drive the elastic gate to press down, which is sealed with the internal wedge groove. Because the elastic rubber gate can stretch and squeeze, so as to achieve a good sealing effect. Therefore, the sealing effect of soft sealing gate valve in water conservancy and some non corrosive media is obvious.
3.For the later maintenance of the soft sealing gate valve, the structure design of the soft sealing gate valve is simple and clear, and it is easy to disassemble and install. When the valve is used for a long time, the elastic gate inside the gate valve will lose its elasticity because of frequent switching, and the rubber will lose its elasticity for a long time, resulting in lax closing and valve leakage. At this time, the advantages of the structural design of the soft-sealed gate valve are reflected. The maintenance personnel can directly dismantle and replace the gate plate without removing the entire valve. This saves time and effort and saves manpower and material resources for the site.
What are the disadvantages of soft sealing gate valve :
1.Speaking of the shortcomings of soft sealing gate valve, then we look at an objective point of view. The core point of the soft sealing gate valve is that the soft sealing elastic gate can be stretched and automatically filled. It is really good to use the soft sealing gate valve for non-corrosive gas, liquid and gas.
2.Of course, there are advantages and disadvantages. The disadvantage of the soft seal gate valve is that the elastic rubber gate can not be used continuously at a temperature of more than 80 °C or with hard particles and corrosive conditions. Otherwise, the elastic rubber gate will be deformed, damaged and corroded, resulting in pipeline leakage. Therefore, the soft seal gate valve is only suitable for use in non-corrosive, non-particle, non-wear medium.
When selecting the valve, it is necessary to understand the characteristics of the medium, temperature, pressure, and on-site use, Combined with the advantages and disadvantages of the soft seal gate valve, comprehensive evaluation is carried out to further select the valve, so that the valve can be used without worries.
Post time: Feb-20-2023