About Us

    Wenzhou Yuanen Fluid Equipment Co.,Ltd ,located at the Binhai Zone of Wenzhou Economic and Technology Zone ,it is the rare manufacturers of high preicision fluid equipments .And we focus closely on the international cooperation,introduced the advanced machining equipments abroad .

    The mainly products we produce are sanitary pumps ,sanitary valves,pneumatic reversing valve ,sanitary pipe fittings,sanitary pipes .They are widely used in food, beer, beverage ,dairy prouducts, cosmetic, pharmacy and biology engineering field .The products made with accordance with the standards of ISO,IDF,DIN and 3A.And the technology can compared to the international level in the same field ,the quality is comply with the requirements of GMP .

    We,YUY, believe that “the customers are our best inspectors,the market is the most impartial judge of enterprises.Our mission is to provide the good quality products with competitive price and satisfaction service for our customers .We believe that we will be much more powerful under the principle of scientific and technology innovation,social reseponsibility.We believe that our honest ,enthusiasm and the step forward will win your support .We are looking forward to starting coopertion ,and establish mutual-benefit relationship with our customers ,and reach win-win .

Product Series
Sanitary pumps
Sanitary valve
Sanitary pipe fittings and connections
Sanitary pipes
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sanitary check valve  技术参数 Location:Home > Product > Product Show


The check valve is used in stainless steel piping system to prevent liquid backflow .

Working principle

▲when the pressure of lower stem exceeds the pressure of the valve stem above and the spring ,the valve opens    
▲When the pressure of lower stem and upper stem balanced ,valve is closed .  
▲ A higher adverse pressure acting on the valve stem on the valve stem so that the valve shut down .
▲ contact with the products components:304 or 316L
▲ sealing material:EPDM


▲ welding,clamp,male and female,flange
▲ Welding mouth:DIN11850,IDF/ISO/SMS


If the valve is being installed inside of a vertival pipes ,pressure difference is 0.08 bar 。
▲Max pressure to transport the material:10bar
▲ highest temperature:140℃
▲ lowest temperature:-10℃

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