Issues regarding the selection of brands for eccentric rotary valves
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This post was last edited by hhj0705 on 2024-1-13 at 16:30. A beginner is seeking help – dear experts, what are the top domestic and international brands of eccentric rotary valves (pneumatic diaphragm type)? Which ones are widely used in China? What should be considered when making purchases?
Well-known domestic and international brands of eccentric rotary valves include Fisher, Samson, Arca, as well as domestic companies such as Shanghai Rexroth and Tianjin Valve Factory. In China, companies such as Shanghai Rexroth, Tianjin Valve Factory, and Jiangnan Valve are widely used. Points to note when purchasing: 1. Valve parameters: Confirm the operating pressure, temperature, valve material, connection type, etc. 2. Drive method: Select an appropriate drive method (such as electric or pneumatic). 3. Control signals: Understand the types of control signals (such as 4-20mA, 0-10V). 4. Port size and flow rate: Select the appropriate valve port size and flow rate based on the properties of the fluid and the requirements of the system. 5. Brand services: Assess the brand’s after-sales service and delivery time. 6. Industry certification: Choose products with the appropriate certifications (such as API, CE) in accordance with industry requirements. 7. Price and value for money: Consider both the price and product performance. .
Tek. Samson. Chuanyi, Wuzhong
Wuzhong Instrument Co., Ltd./Wuxi Intelligent Automation Engineering Co., Ltd./Chongqing Chuanyi Automation Co., Ltd./Xuzhou Akka Control Valves Co., Ltd./Zhejiang Yongsheng Technology Co., Ltd./Zhejiang Bell Control Valves Co., Ltd. – These are all reputable large manufacturers with extensive experience in the domestic market. These are not special types of valves; their technology is quite mature. It depends on where they will be used: if they are to be installed in critical process areas or where high performance is required, it might be better to opt for imported valves (such as FISHER/FLOWSERVE/SAMSON/MASONEILAN, etc.). For standard applications, cost considerations allow the use of domestic valves, and that’s perfectly fine. If there are still concerns, one can consider using a domestic valve body paired with an imported actuator.
Happy New Year 2024
The Chinese and English names of the brand are a bit mixed up: lol
The eccentric rotary valve was invented by Memsonylan; the Memsonylan tube is known as a flexure valve. Other companies later tried to imitate it, but the key technology remained that of Memsonylan’s flexure mechanism. Memsonylan uses this flexural process to close the valve, and this operation relies on the force generated by flexure – there is no friction between the valve core and the seat. In contrast, other manufacturers use a mechanism similar to that of ball valves, where rotation is used for closing, and friction occurs between the valve core and the seat during this process, which is not favorable over time.
Happy New Year 2024 **********************
Happy New Year 2024 **********************
The imported brands are Masoneilan, Fisher, Neles, azbil……