2022-03-20
When the purchase of visual valves, the surface should be no blisters; plating surface should be uniform, should pay attention to whether there is peeling, cracking, scorching, exposed, flaking, dark spots and obvious pitting and other defects; spray surface tissue should be fine, smooth Uniform, no sagging, exposed defects.
First, understand the valve knowledge:
Civil valves commonly used in ordinary households commonly used gate valve, ball valve, triangular valve and other forms, usually iron or copper. As the mechanical properties of copper alloy, with less rust, corrosion resistance advantages, so the copper valve has gradually replaced the iron valve. Triangle valve surface are basically used electroplating, its role is not only to control the flow of pipeline media, but also play a decorative role. Triangle valve is generally connected to the pipe and water hose for the faucet, toilet water supply, there are connecting pipes and water hoses for water heater. Gate valve is basically used for the connection of pipe and water meter; the ball valve is used for the connection of pipeline and water heater; the ball valve is more convenient than the opening and closing than the gate valve. At present, most of the connection between pipe and water meter adopts ball valve.
Second, to master the purchase of civil valves should be based on the different requirements of users choose different types of household valves:
1. Valued purchase when the valve, the surface should be no blisters; plating surface should be uniform, should pay attention to whether there is peeling, cracking, scorching, exposed, flaking, dark spots and obvious pitting and other defects; spray surface tissue should be fine , Smooth and uniform, no sagging, exposed defe