1. Civil 2. Industrial angle valves are also called triangle valves, angle valves and angle water valves. This is because the pipe is in a 90 degree corner shape at the angle valve, so it is called angle valve, angle valve and angle water valve. The valve body of angle valve has three ports: water inlet, water volume control port and water outlet, so it is called triangle valve. Of course, the angle valve is constantly improving. Although there are still three ports, there are also angle valves that are not angular. Angle valve in industry: except that the valve body of angle control valve is right angle, other structures are similar to straight through single seat control valve. Its characteristics are: 1. The flow path is simple, and the dead zone and vortex zone are small. By virtue of the scouring effect of the medium itself, it can effectively prevent the medium from blocking, that is, it has good self-cleaning performance; 2. The flow resistance is small, and the flow coefficient is larger than that of single seat valve, which is equivalent to the flow coefficient of double seat valve; It is suitable for occasions with high viscosity, suspended solids and granular fluids, or where right angle piping is required. Its flow direction is generally bottom inlet and side outlet. Under special circumstances, it can be installed reversely, that is, the flow direction is from side to bottom. The cold and hot triangle valves (distinguished by blue and red marks) are made of the same material by most manufacturers. The cold and hot marks are mainly used to distinguish between hot water and cold water.