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Soft seal, hard seal, which one should be preferred in cut off valve?

Writer:Fanny KangDate:2017-4-28 17:00

Soft seal, hard seal, which one should be preferred in cut off valve?

soft seal hard seal

Select the shut-off valve should be considered in terms of leakage rate, medium type, medium temperature, flow coefficient and other parameters and cost-effective.The sealing material, hard seal should be the first choice,and then consider the soft seal.

WHY?

Cut off the valve required to leak the lower the better, soft seal valve leakage is the lowest, cut off the effect of course, but not wear, poor reliability. From the leakage of small, sealed and reliable double standard, the soft seal cut off as hard seal cut off.

Cut valve Main valve type selection:

1) three eccentric metal hard seal butterfly valve

2) Double eccentric ball seal butterfly valve

3) ball valve

4) eccentric rotary valve

5) single seat valve

6) Sleeve valve

7) soft seal valve

TypeInfo: Technical Articles

Keywords for the information:cut off valve  hard seal valve  soft seal valve