Shell material of angle valve: angle valve is divided into brass, alloy, iron, plastic and so on according to the shell material. Brass is easy to process, has strong plasticity, hardness, and strong bending and torsion resistance; the cost of the alloy is low, but the disadvantage is that the bending and torsion resistance is low, and the surface is easy to oxidize; iron is easy to rust and may pollute water sources. In today's environmentally friendly and low-carbon society Not recommended; plastic is less expensive and not easy to use in the extremely cold north.
