Thus the valve control valve flow capacity than the average large and no leakage in the range of allowable pressure shut-off valve can be used.
因而阀流通能力比一般调节阀大且无泄漏，在许用压差范围内可作切断阀用。
Thus the valve control valve flow capacity than the average large and no leakage in the range of allowable pressure shut-off valve can be used.
因而阀流通能力比一般调节阀大且无泄漏，在许用压差范围内可作切断阀用。
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