1, Light turning handle, good reel
Commonly used faucet spools are steel ball spools and ceramic spools. Steel ball spools have very good pressure resistance, but the disadvantage is that the rubber seal that acts as a seal is easily worn and will age quickly. Compared to steel ball cartridges, ceramic cartridges are more resistant to heat and abrasion. At the same time, ceramic valve core itself has good sealing performance, so it can achieve a high opening resistance, will not cause nozzle leakage due to wear and tear of the valve core. Faucets with ceramic valve cores are more comfortable and smooth to use, with fast opening and closing speeds. Because the valve core is inside the faucet, consumers can not see the valve core when buying, but consumers can simply judge the quality of the valve core according to the feeling when turning the handle. Generally speaking, up and down, left and right rotate the handle, if it feels light, not blocked, it means that the valve core is better.
2, The surface coating should be as bright as the mirror
After grinding and polishing, the surface should be plated with nickel or chrome to prevent oxidation of faucet. After plating nickel or chrome, should be on the faucet for medium-sized hydrochloric acid test. After the test, the coating should be free of rust. It is understood that only faucets that pass the neutral salt spray test will leave the factory. When consumers buy, it is best to put the faucet in a well-lit place for inspection. Faucet surface should be bright as a mirror, without any oxidation spots, scorch marks, no pores, no blisters, no leakage plating, color and luster uniformity. Feel no burr, gritty feeling. Use your fingers to press the faucet, the fingerprints quickly spread, it is not easy to attach dirt.
3, The quality must be guaranteed
The faucet body is usually brass. The highest quality plating can be guaranteed on brass products. The higher the purity of the brass, the better the quality of the plating and the less likely the surface plating will corrode. Generally speaking, consumers can use the valuation method to identify the quality of the faucet when purchasing. Brass is heavier than hard, zinc alloy is lighter than soft. Experts remind, can not simply to judge the quality of the faucet weight, because some manufacturers can also increase the wall thickness of the faucet or by adding other metal materials, so that the faucet heavier.
4, Rich blisters
When buying a faucet, consumers should try to choose a faucet with a bubbler and feel the water flow with their hands. The softness and richness of the water flow (the amount of air bubbles in the stream) indicates a better quality bubbler. The bubbler has six layers, usually consisting of a metal mesh cover (some plastic). As the water flows through the mesh, it is cut into a large number of small jets of water with air in between.