Through comparable study of gas well capacity, a simple method is obtained to calculate absolute open flow and to predict production performance of gas well.
本文通过研究气井产能的可比性，得到一种计算气井绝对无阻流量及预测气井生产动态的简易方法。
Use of smaller valves or V-Port trim with lower flow capacity may permit the valve to be open at a greater percentage, thus avoiding damage.
采用具有更小流量的通径更小的截止阀或V形阀内件截止阀，可能使得阀门能够具有更大的开启度，因此可以避免损坏。
When the valve is fully open, flow capacity is big, pressure loss is small, and the medium would not deposit in the body cavity.
全开时阀门流通量能力大，压力损失小，且介质不会沉积在阀体中腔。
When the valve is fully open, flow capacity is big, pressure loss is small, and the medium would not deposit in the body cavity.
全开时阀门流通量能力大，压力损失小，且介质不会沉积在阀体中腔。
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