The angle valve for household use is made of stainless steel, which has good mechanical strength and corrosion resistance. The valve core is made of stainless steel, which is usually used in anti-corrosion occasions, such as low-concentration sulfur and salt. Copper valve core is not commonly used, mainly used in explosion-proof occasions, such as hydrogen, acetylene, methane and other flammable and explosive things in the surrounding environment, copper valve core will not produce sparks when it is collided or rubbed.
Triangle valve purchase skills: First look at the material. It is best that the copper material is heavier, and the excellent material greatly extends the service life of the product; although the zinc alloy on the market is relatively cheap, it is easy to break after a year, and the maintenance is uncomfortable. Next, look at the spool. Generally, ceramic valve cores are used. The valve cores are products. They are tightly closed and the life span depends on it, especially the sealing ring and ceramic discs inside. But generally we don't see it, so we have to try the feel. The feel is too heavy, the switch is uncomfortable, the feel is too light, it will leak after a long time, and the soft feel has a longer life. Finally, look at electroplating gloss. Pay attention to the gloss, whether the product is blistered or scratched, the surface of a good product is bright and clean, and the hand is smooth and flawless.