Hard seal ball valve and soft seal ball valve difference Hard seal ball valve manufacturers and everyone together to understand.
1. Different sealing methods
Hard seal ball valve: It is sealed by the tight bite between the metal and the metal, just like two metal parts are tightly fastened together.
Soft seal ball valve: By filling a soft material (such as rubber or plastic) to seal, just like using a rubber pad to plug the gap.
2. Different temperature resistance
Hard sealed ball valve: Because it is metal, it can withstand high and low temperatures, and can usually be used between -196 ° C and +650 ° C.
Soft seal ball valve: The temperature range of soft materials is small, generally between -20 ° C and +180 ° C, too high or too low temperature will make the material deform or fail.
3, the applicable media is different
Hard seal ball valve: seal more reliable, can be used for almost any medium, such as gas, liquid, steam and so on.
Soft seal ball valve: suitable for more "mild" media, such as no particles, no corrosion, no crystallization of liquid or gas.
4, sealing performance is different
Hard sealed ball valve: better sealing performance, more durable, not easy to be eroded or aging by the medium.
Soft seal ball valve: sealing performance depends on soft materials, a long time may be corroded by the medium or aging, resulting in poor sealing effect.
5. Brief summary
If you need high temperature resistance, corrosion resistance, or the medium is more complex, choose a hard sealed ball valve is more reliable.
If the medium is mild and the temperature is not high, it is enough to choose a soft sealed ball valve, and it is usually cheaper.
