there are many factors which can damage the valve sealing, important has the following kinds:

1, the structure of the sealing deputy

under the change of temperature or sealing force, the structure of sealing deputy will cause change. And this kind of change will harm and change sealing pair mutual acting force, thus reduce the characteristics of the valve sealing. Therefore, when choosing hydraulic seals, hydraulic seals must choose elastic deformation. In addition, also must pay attention to the overall width of the. The reason is that sealing surface can not accord with, when total broad a sudden increase, sealing force must be an upgrade.

2, surface pressure

the ratio pressure specifications damage the Industrial Valves sealing properties specifications and the service life of the valve. Therefore, tu face specific pressure is also very important to be a factor. Under the same specification, the specific pressure too symposium cause the damage of the valve, but not specific pressure banquet cause valve leakage. Therefore, we should fully consider the specific pressure when design fits in.

3, the physical properties of chemical substances

the physical properties of chemical damage to the Industrial Valves sealing properties. This kind of physical properties including temperature, viscosity and the surface of the water absorption ability, etc. Temperature change is not only damage the sealing deputy sags and parts change in the specifications, also plays a role in the viscosity of the gas. The gas viscosity with the increase of the temperature or lower and the expansion or down.

therefore, easy to reduce the temperature on the damage level of Industrial Valves sealing properties, we in the sealing deputy project design, to design it into plasticity and high pressure valve with heat compensating valve, etc. The viscosity and the penetration of liquid to professional ability. When under the same specification, the greater the viscosity, the less the liquid penetration into the professional ability. The surface of the water absorbing capacity refers to the metal composite material surface with a layer of plastic film, to remove the layer of plastic film. Because this layer of floating oil is too thin, can damage the surface of the water absorption ability, lead to clogging fluid channel.

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