Visual inspection
Surface smoothness: high-quality ceramic spool surface should be extremely smooth, no obvious bumps, scratches, cracks or bubbles and other defects observed by the naked eye. Touch gently with your fingers, you should not feel any rough or granular feeling, if the surface is uneven, it may affect the sealing and service life of the valve core.
Color uniformity: Good quality ceramic spool color uniformity, no obvious color difference. If the color is different or miscellaneous, it may be improper process control during the firing process, which will reduce the strength and stability of the ceramic, and then affect the quality of the valve core.
Edge integrity: Carefully check the edge of the ceramic spool, should be intact, no edge, missing corners and other problems. Incomplete edges may result in a loose installation or a risk of breakage during use.
Material analysis
Ceramic material purity: high-quality ceramic spool is generally made of ceramic materials with higher purity, and the main components are usually alumina. Ceramics with higher purity have higher hardness, better wear resistance and better corrosion resistance. In general, the higher the alumina content, the better the quality of the ceramic spool.
Density test: The density can be roughly judged by comparing the weight of ceramic spool of the same size. The density of the ceramic valve core indicates that its internal structure is more dense, the porosity is low, the quality is relatively good, and the performance is better in the aspects of pressure resistance and leakage resistance.
Performance test
Opening and closing feel: gently turn the handle of the spool by hand. The hand sensation is very smooth when the high-quality ceramic spool is turned, and there is no feeling of blockage, astringency or obvious resistance. At the same time, during the rotation process, you can feel the obvious damping sense, and the sealing can be easily achieved when it is closed, and there will be no lax closure or excessive loosening.
Water flow control: Install the ceramic spool on the faucet for testing to observe the control of water flow. Good quality ceramic spool can accurately control the size of the water flow, from the process of closing to opening, the water flow should change smoothly from small to large, there will be no sudden or small or poor water flow phenomenon. In the closed state, should be able to completely stop the water, no leakage phenomenon.
Cold and hot stability: the cold and hot cycle test is carried out, the water temperature of the faucet is repeatedly switched between cold and hot water, and the working condition of the ceramic valve core is observed. High-quality ceramic spool can maintain good sealing performance and water flow control performance in the process of hot and cold alternations, and will not cause problems such as water leakage, stuck or unstable water flow due to thermal expansion and contraction.
Branding and certification
Brand reputation: Well-known brands usually have more stringent standards and rich experience in production process, quality control, etc., and the quality of the ceramic spool produced by them is more reliable. Through network evaluation, professional forums, industry reputation and other ways to understand the quality of different brands of ceramic spool.
Quality certification: Check whether the ceramic valve core has relevant quality certification marks, such as NSF certification, WRAS certification, etc. These certifications are the recognition of the ceramic valve core in terms of material safety, performance reliability, etc., and the quality of certified products is more guaranteed.
Post time: Feb-13-2025
