How To Judge The Quality Of Sanitary Check Valves?
The quality of Sanitary Check Valve can be judged from the following aspects:
1. Sealing performance
A high-quality sanitary check valve should have good sealing performance and can effectively prevent the backflow of the medium. It can be checked by pressure testing, that is, after the valve is closed, pressurize the upstream of the pipeline to observe whether the valve leaks.
2. Flow capacity
A good check valve should have a large flow capacity, minimize flow resistance and reduce pressure loss. Its flow capacity can be judged by measuring the pressure drop when flowing through the valve.
3. Corrosion resistance
Sanitary check valves must have good corrosion resistance and can operate stably for a long time under various media. This can be judged by referring to the corrosion resistance of the valve material. High-quality materials such as 316L stainless steel or other alloy materials approved for use in the food and pharmaceutical industries are good choices.
4. Material and structure
The inner and outer surfaces of the valve should be finely polished with low roughness requirements to reduce medium adhesion and prevent bacterial growth. At the same time, the valve design should avoid dead corners to ensure smooth transition of the flow channel and easy cleaning and maintenance. In terms of materials, it is recommended to choose durable and non-deformable products, such as high-quality plastic or metal materials.
5. Ease of operation
A high-quality check valve should be easy to operate and can easily close or open the valve. You can judge whether its operation is flexible and smooth, without jamming or abnormal resistance by operating the valve.
6. Compliance certificate and test report
Check whether the valve has obtained relevant sanitary certifications, such as 3-A, EHEDG, FDA, etc., which are important credentials to prove that the product meets the sanitary requirements.
The manufacturer should be able to provide a comprehensive product test report, including but not limited to pressure testing, sealing testing, cleaning ability verification, etc., to ensure that the valve can withstand the expected working conditions in actual applications.
7. Brand and after-sales service
Well-known brands of check valves usually have better quality and performance guarantees, and the perfect after-sales service can also provide timely help when there is a problem with the product.
In summary, judging the quality of sanitary check valves requires comprehensive consideration of the above aspects. When purchasing, it is recommended to choose reputable brands and merchants to ensure that you purchase high-quality products and receive good after-sales service.
