According to the valve core, the triangle valve can be divided into spherical valve core, ceramic valve core, ABS (engineering plastic) valve core, alloy valve core, and rubber rotary valve core. Spherical spool: The advantage of the spherical spool is that the diameter is larger than that of the ceramic spool, it will not reduce the water pressure and flow, and it is easy to operate (fully open/close by rotating 90 degrees). The STH spool is chrome-plated. The advantages of chrome plating are high hardness, wear resistance and long service life; avoid patina. ABS (engineering plastics): The plastic valve core is low in cost, and the quality is not guaranteed. Ceramic valve core: The advantage of ceramic valve core is that the switch feels smooth and light. It is suitable for families, has a long service life and a relatively high cost. Ceramic spools are recommended. Rubber rotary valve core: It has now been eliminated because it is very time-consuming and laborious to open and close. At present, families rarely use angle valves of this material. The triangle valve is divided into brass, alloy, iron and plastic according to the shell material. Brass: easy to process, strong plasticity, hardness, and strong bending and torsion resistance. Alloy: low cost, the disadvantage is low bending and torsion resistance, and the surface is easy to oxidize. Iron: easy to rust and pollute water sources. It is not recommended to use in today's environment-friendly and low-carbon society. Plastic: low cost, not suitable for use in the extremely cold north.
