1. The household triangle valve is made of stainless steel, which has good mechanical strength and corrosion resistance. 2, the valve core is stainless steel, usually used in anti-corrosion occasions, such as low-concentration sulfuric acid, hydrochloric acid, etc. 3, the 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, the copper valve core will not produce sparks when it is collided or rubbed.
Triangle valve purchase skills:
Look at the material first. It is best that the copper material is heavier, and the excellent material greatly prolongs 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. Ceramic valve cores are generally used. The core of the valve core is the heart of the product. It is the heart of the product that is 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 the plating 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. In addition, the salt spray test of the angle valve on the market can not meet the requirements of GB18145-2003, not to mention that this is just a thing installed in the toilet, and few people pay attention to it.
