As we all know, each water ring vacuum pump will have an intake valve, then he exactly what effect?
Many people will understand as if you open the intake valve water ring vacuum pump vacuum will not reduce it? This is indeed a fact. However, the role of the intake valve is to eliminate water ring vacuum pump is to reach the ultimate vacuum is a noise. Water ring vacuum pump in operation during rapid friction with the impeller, when reached the ultimate vacuum, it will produce a harsh sound, of course, this does not affect the normal use. But this sound will have an impact on some people's environment, so when the opening of the bleed valve will be a corresponding weakening of this sound, so water ring vacuum pump release valve role is that.
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