偏心半球阀缺点 阀门厂家排名前50

偏心半球阀缺点：

缺点：

1、偏心半球阀的结构复杂，维护和维修较为复杂，容易出现故障；

2、安装过程中，要求安装精度较高，安装不当容易造成泄漏；

3、偏心半球阀的密封性能较差，密封面容易损坏；

4、偏心半球阀的价格相对较高，不太实惠；

5、由于偏心半球阀的结构原因，使用时会出现流量不均匀、噪音大等现象；

6、偏心半球阀的适用介质范围较窄，大部分只适用于液体介质。

阀门厂家排名前50：

1.Kitz(Japan) 2.Flowserve Corporation (US) 3.Curtiss-Wright Corporation (US) 4.Cameron International Corporation (US) 5.Velan Inc. (Canada) 6.ITT Corporation (US) 7.Crane Co. (US) 8.Metso Corporation (Finland) 9.Spirax Sarco (UK) 10.Power-Sonic Corporation (US) 11.KITZ Corporation (Japan) 12.Nihon Koryo Valve Co., Ltd. (Japan) 13.Neway Valve Co., Ltd. (China) 14.EBRO Armaturen GmbH & Co. KG (Germany) 15.Habonim (Israel) 16.Shanghai Huaerda Valve Co., Ltd. (China) 17.Shanghai Kuanjie Valve Co., Ltd. (China) 18.Sungo Valve Group Co., Ltd. (China) 19.Shanghai Huayi Valve Co., Ltd. (China) 20.C & C Industries, Inc. (US) 21.Emerson Electric Co. (US) 22.Royce Technologies Corporation (US) 23.Shanghai Fudun Valve Co., Ltd. (China) 24.Hitachi, Ltd. (Japan) 25.Valvitalia (Italy) 26.Shanghai Weike Valve Co., Ltd. (China) 27.Mueller Co. (US) 28.Shanghai Yichao Valve Co., Ltd. (China) 29.Schubert & Salzer (Germany) 30.Korea Valve Co., Ltd. (Korea) 31.General Electric Company (US) 32.Shanghai Lixin Valve Co., Ltd. (China) 33.Karuvadu Valves Pvt. Ltd. (India) 34.Fluid Controls (UK) 35.Shanghai Huadong Valve Co., Ltd. (China) 36.Shanghai Baoyi Valve Co., Ltd. (China) 37.Samson AG (Germany) 38.Shanghai Xinhao Valve Co., Ltd. (China) 39.Tyco International (Ireland) 40.Shanghai Shengxin Valve Co., Ltd. (China) 41.Hiton Valve Co., Ltd. (Taiwan) 42.Shanghai Gaofeng Valve Co., Ltd. (China) 43.Leser GmbH + Co. KG (Germany) 44.Shanghai Xunfeng Valve Co., Ltd. (China) 45.Rotork plc (UK) 46.Shanghai Boqi Valve Co., Ltd. (China) 47.Shanghai Yuyuan Valve Co., Ltd. (China) 48.Shanghai Yuxin Valve Co., Ltd. (China) 49.SMC Corporation (Japan) 50.Shanghai Huaguang Valve Co., Ltd. (China)