Have you been scammed by fake valves? How to identify refurbished valves?

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Today’s valve market is full of inconsistencies; many sellers, in order to make more money, use refurbished valves to replace the original ones. It causes great trouble and numerous security issues for many users. So, today Xiao Guan wants to tell everyone how to identify refurbished valves. The main methods of valve fraud employed by valve manufacturers in the market today include the following: 1. Manufacturing valves from iron or carbon steel, as well as repairing defective valves and passing them off as good quality products. 2. Labeling the valve products of local small factories with the registered trademarks of well-known brand manufacturers to pass them off as genuine products. 3. Impersonating users, distributors, and agents of well-known major companies to sell inferior products under false pretenses. 4. Create steel stamps to change ordinary-grade valves to D-grade valves, thereby reaping huge profits. Valve refurbishment poses severe risks; it not only disrupts market order but also creates significant potential hazards to the quality of construction, causing considerable harm to society. It’s not enough to just know about the methods used for fraud; we must also keep a sharp eye. No matter how cunning a fox may be, it can’t outwit a skilled hunter. Now I’ll tell you how to identify refurbished valves. 1. Look at the color: Refurbished valves differ significantly from genuine products in terms of color. These low-cost materials usually have a whitish appearance, which is quite different from the greenish tone of valve steel. 2. Check the steel stamp: For genuine valves, the stamping is done before the valve undergoes heat treatment, using specialized stamping techniques; as a result, the characters are clear. The font of the refurbished valve is uneven and blurry. 3. Check for oil stains: To prevent rust, counterfeit and refurbished valves have thick layers of oil applied to their surface, which reduces the smoothness of the valve body itself. 4. For DN80 or higher; valves of too small a size are not cost-effective. 5. Check the gate plate: Refurbished valve gate plates usually show signs of grinding and rust. 6. Remove the nut at the upper end of the valve stem as well as the label, and check the material of the locking nut inside; the genuine version is made of brass, otherwise it is a counterfeit. If people are not able to make the distinction, they can seek the help of professionals, or simply turn to reliable manufacturers. Xiao Guan hopes that this article will be helpful to those involved in engineering installation and procurement, so that we can work together to resist the use of refurbished or counterfeit valves and ensure the quality and safety of construction projects.