Valve:
Valves are mechanical devices that control the flow of fluid and pressure within a system or process. Valves are used in a wide variety of applications, including controlling the flow of water, gas, steam, oil, and other liquids, as well as controlling the pressure of liquids and gases. Valves are available in a variety of materials and sizes, and can be operated manually or automatically.
1、美国罗克韦尔阀门公司(Rockefeller Valve Company)
2、美国威格尔阀门公司(Weir Valves Company)
3、德国海德曼阀门公司(Haidemann Valves Company)
4、美国维多利亚阀门公司(Victoria Valves Company)
5、德国普莱格尔阀门公司(Praeger Valves Company)
6、瑞士博洛尔阀门公司(Borr Valves Company)
7、美国斯图尔特阀门公司(Stuart Valves Company)
8、德国贝克阀门公司(Baker Valves Company)
9、美国科威特阀门公司(Kuwait Valves Company)
10、德国恩斯特阀门公司(Ernst Valves Company)
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