There are two types of angle valves: "cold" and "hot" (distinguishable by blue and red signs) according to the difference between hot and cold. Yes: hot and cold signs, mainly to distinguish which is hot water and which is cold water. Only some low-end slow-opening angle valves are rubber ring valve cores, and the rubber ring material cannot withstand 90-degree hot water, and needs to be divided into hot and cold. According to the opening method, the angle valve can be divided into two types: "quick opening" and "slow opening". Quick opening refers to the quick opening and closing of the valve at 90 degrees. Slow opening refers to the 360-degree non-stop rotation of the angle valve handle to open and close the valve, and now basically use quick opening.
