The outer surface of the faucet is generally chromed. The plating of the product has the specified process requirements, and after a certain time salt spray test.
No corrosion within the specified time. In the case of sufficient light, the product can be placed in the hands of a direct distance observation. Faucet surface should be bright as a mirror, no oxidation spots, scorch marks. But careful observation, no pores, no blistering, no leakage plating. Color and luster is uniform. Use your hands to touch there is no sense of burr and no sense of sand. Press the faucet surface with your fingers, fingerprints spread fast, not easy to adhere to the scale.
Some titanium faucets are plated with titanium, bronze (imitation gold plating), imitation gold electrophoresis paint and other methods. Plating electrophoresis paint or bronze faucet surface is often quickly corroded, the three kinds of non-specialists are difficult to identify, but the general warranty card will indicate that the faucet surface of the relevant requirements.
The main components of the faucet housing are generally made of brass. After grinding and cleaning, turning processing, pickling and impregnation, pressure testing, polishing, electroplating and other processes made. Some manufacturers in order to reduce production costs, choose zinc alloy instead. Three bath faucet handle, decorative nut and switch valve basically use brass, zinc alloy, ABS engineering plastics. Wall cover is made of copper, stainless steel, plastic. The connection nut, eccentric joint and spray nozzle shell are made of brass, and the above parts A recommended brass material.
The quality of the product plating brass material can be guaranteed, corrosion resistance longer. The higher the purity of the brass, the better the plating quality, and the surface coating is not easy to corrode. Galvanized alloys have poor plating quality and poor corrosion resistance, while ABS process plastics are the cheapest and have poor plating quality. It can be identified by weight estimation, minor surface scratches and surface plating quality.
Faucets are available in a variety of styles and with different functions. According to the purpose, there are generally wash basin, kitchen sink, bathtub, shower, bathtub and so on. According to the function, there are ordinary type, sensor type, constant temperature type, etc.. For example, the induction faucet has the function of automatic water induction, reach out to the outlet of the faucet will make the water flow out. Convenient, health, more suitable for public places (high-grade) of the bathroom.
4, Valve core
The valve core is the heart of the faucet and ceramic valve cores are the best. Quality products use ceramic valve cores, which have strong wear resistance and good sealing performance. Generally can be used more than 300,000 to 500,000 times. Low-grade products are mostly made of copper and rubber seals, which have a short service life. But the price is lower.
The faucet should have a glossy surface, no burrs, no pores, no oxidation spots when touched. The main body of a quality faucet is usually made of copper. After shaping, polishing, the first surface is plated with acid copper, and then plated with nickel, chromium plating (three layers of plating). Ordinary products are generally only nickel and chrome plated (two layers of plating). Ordinary products are coated with specific process requirements, and through the neutral salt spray test, there is no rust in the specified time. Therefore, high-quality faucet products, close structure, uniform coating, smooth and delicate color, long-term use can be kept bright as new.
Turn the handle gently to see if it is light and flexible, there is no blockage phenomenon. Check the parts of the faucet, especially the main components are tightly assembled, there should be no loose feeling.