Civil valve commonly used at present ordinary family gate valve, ball valve, triangle valve and other forms, generally made of iron or copper.
Due to the good mechanical properties of copper alloy, with the advantages of not easy to rust, corrosion resistance, so copper valves have gradually replaced the iron valve. Triangle valve surface is basically used electroplating, its role is not only to control the flow of pipeline media, but also play a decorative role. The triangle valve connects the pipe and the water inlet hose for the water tap, the toilet bowl water supply, also has the connection pipe and the water inlet hose for the water heater water supply.
Gate valves are basically used to connect pipes to water meters.
Ball valves are used to connect pipes to water heaters.
Because the ball valve opens and closes than the gate valve is convenient, at present the pipeline and the water meter connection also mostly uses the ball valve.
Selection And Purchase Of Civil Valves:
Different types of civil valves should be selected according to the different requirements of users:
1. When selecting and purchasing the valve, there should be no sand hole on the surface; the surface of the plating should be glossy and uniform, and attention should be paid to whether there are defects such as peeling, cracking, scorch, exposed bottom, peeling, black spot and obvious pockmarks, etc. Shall not have hanging, exposed bottom and other defects. These defects directly affect the service life of the valve.
2. The pipe thread of the valve is connected with the pipeline. When selecting and purchasing, visually inspect the surface of the thread for obvious defects such as dent, broken tooth, etc. . What is particularly important is that the effective length of the pipe thread and the connecting piece will affect the reliability of sealing pay attention to the effective length of pipe thread when purchasing. The effective length of DN15 cylindrical pipe thread is about 10mm.
3. Gate valve, ball valve generally in its body or handle marked with a nominal pressure, purchase can be based on their own needs.
4. When replacing an existing gate or ball valve, make sure the structural length of the valve so that it can not be installed after purchase.
5. There are two kinds of pipe thread of triangle valve, internal thread and external thread. We should choose and buy according to our needs. We should also pay attention to the triangle valve made of some zinc alloy on the market at present.
Should try to buy in the regular building materials store, supermarket, so that the quality of products can be more assured.
Post time: Jul-28-2021