针型阀比其他阀门更能受压，密封性能好，所以一般用于较小流量，较高压力的气体或者液体介质的密封，还可与压力表配合使用。
Needle valve pressure better than other valves, sealing performance, it is generally used for small flow, high pressure gas or liquid sealing medium, also used in conjunction with the pressure gauge.
机台的主要仪表由压缩机空气压力表、冷媒高压表、冷媒低压表组成；
Machine main instrument is composed of a compressor air pressure gauge, pressure gauge, coolant cooling medium low pressure gauge;
机台的主要仪表由压缩机空气压力表、冷媒高压表、冷媒低压表组成；
Machine main instrument is composed of a compressor air pressure gauge, pressure gauge, coolant cooling medium low pressure gauge;
应用推荐