Look visual valves, the surface should be no Shayan; electroplating shiny surface should be uniform, it should be noted whether peeling, cracking, char, Lo at the end of spalling, and the obvious Ma Peutz-point defects; spraying the surface organizations should be finer smooth uniform flow may be linked to such defects exposed at the end.

     At present the average family civilian valves used generally valve, the valve, valve triangular form, usually iron or bronze.
     Since the mechanical properties of copper alloy, and with rust, corrosion resistance of the advantage, bronze valve has been gradually replaced the iron valves. Triangle basic surface valve used in electroplating, it is not only the role of the media is to control the pipeline flow, can also play a decorative role. Triangle connecting pipes and valves general for Tap water hoses, Toilet water use, but also connect hose pipes and water heaters used for the water supply.
     Basic valve for connecting pipes and water meters.
     Ball valves for pipes and water heaters connected.
     The ball valve gate valve than convenience, pipelines, and water meter connections also use most of the ball valve.

Civil valve Optional:
     According to the different requirements of users choose different types of civilian valve:
     1. Purchase, visual valves, the surface should be no Shayan; electroplating shiny surface should be uniform, it should be noted whether peeling, cracking, char, Lo at the end of spalling, and the obvious Ma Peutz-point defects; spraying the surface organizations should detailed, smooth uniform flow may be linked to such defects exposed at the end. These defects will directly affect valve life.
     2. Valve pipe thread and the pipeline is connected, when the visual thread in choosing whether dent the surface, the obvious defects such as broken teeth, with particular attention to the threaded connection with the rotation will affect the effective length of the sealed reliability, we should pay attention to when buying the effective length of the thread. DN15 general of the cylindrical pipe thread in the effective length of about 10 mm.
     3. Valve, the valve ball valve in its general or handle marked Nominal pressure, the purchase may choose according to their own needs.
     4. Replacement of the existing gate valve or ball valve, it is necessary to understand its structure length, so after purchase can not be installed.
     5. Triangle valve in a pipe thread screw thread, and two, according to the needs of purchase; to the attention of the market is that some zinc alloy manufacturing triangular valve, the valve products at lower than normal, But easily fracture caused by corrosion.
     Should be in the formal building materials stores, supermarkets to buy such a product quality can be guaranteed.