阀门的种类及型号表示方法 阀门厂家排名前50

阀门的种类及型号表示方法：

阀门种类：

1. 止回阀：根据阀体材质可分为球阀、阀板阀、截止阀、蝶阀，型号表示为：止回阀+阀体材质+阀体压力等级+尺寸规格，如：止回阀WCB150LB10.

2. 截止阀：根据阀门结构可分为单片式、带活动片的、球形和三通四通，型号表示为：截止阀+阀体材质+阀体压力等级+尺寸规格，如：截止阀WCB600LB10.

3. 调节阀：根据阀门结构可分为球形调节阀、阀芯调节阀、比例调节阀等，型号表示为：调节阀+阀体材质+阀体压力等级+尺寸规格+调节方式，如：调节阀WCB300LB10-P.

4. 旋塞阀：根据阀门结构可分为螺旋旋塞阀、扁平旋塞阀、复合旋塞阀等，型号表示为：旋塞阀+阀体材质+阀体压力等级+尺寸规格+旋塞型式，如：旋塞阀WCB500LB10-SC.

5. 止逆阀：根据阀门结构可分为活塞式止逆阀、叶片式止逆阀等，型号表示为：止逆阀+阀体材质+阀体压力等级+尺寸规格+止逆型式，如：止逆阀WCB400LB10-P.

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)