WHG-031/210WHG-033/32维拓斯减压阀VTOZWHG，WKG型叠加式减压阀WHG-031/32WHG-031/50，WHG-031/75WHG-031/100，WHG-031/210WHG-033/32，WHG-033/50WHG-033/75WHG-033/100WHG-033/210WHG-034/32WHG-034/50WHG-034/75WHG-034/100WHG-031/210WHG-033/32维拓斯减压阀WHG-034/210WKG-031/100WKG-031/210WKG-033/100WKG-033/210WKG-034/100WKG-034/210流量特性：它是指输入压力—定时，输出压力随输出流量g的变化而变化的持性。当流量g发生变化时，输出压力的变化越小越好。一般输出压力越低，它随输出流量的变化波动就越小。)