What should I do if the water meter valve won't twist? What kind of tap water valve is good? What should I pay attention to when purchasing water pipe valves?

The faucet and water pipe at home are leaking. When we change the faucet or repair the water pipe, we must close the main water valve, that is, the water meter valve at home. However, because the water meter valve is in the on-off state for a long time, when we turn off the water valve, the water meter valve will not screw on! What should I do if the water meter valve won't twist? What kind of tap water valve is good? What should I pay attention to when purchasing water pipe valves?

What should I do if the water meter valve won't twist? We can tap the water valve with a wrench and vibrate the water valve with frequency. We must control our strength. The strength is too small to work. If it is too strong, congratulations, your home may be flooded. You can slowly twist the water valve by hand after knocking. You can drop some rust remover on the valve, and then we can slowly screw the water valve after the rust dissolves. 3. If there is no rust remover at home, you can drop engine oil or vinegar on the valve, both of which can be corroded by solvent, and then beat the water screw valve with a wrench.

If all the above methods fail, then we need to find a property to turn off your water, or replace the water valve with the whole floor of your house. Never turn off your water inlet valve before replacing it, or it will be easy to get water at home.

Tap water valve What kind of good household tap water valve is generally in the form of gate valve, ball valve and triangle valve, which are made of copper, stainless steel and iron.

Gate valve: Because its passage is only a straight line formed by water flow, the water flow has little assistance and is simple to install, it is very useful and is often used at the joint of water pipe and water meter. However, the shortcomings are also obvious, which are easy to cause erosion wear between sealing surfaces and difficult to maintain.

Ball valve: wear-resistant, good sealing, low switching force, long service life and convenient maintenance. Now it is widely used in life and often used as the main valve. At present, many domestic main water valves adopt ball valves.

Triangle valve: Its surface is galvanized and looks very beautiful. It is mainly used to control the flow between pipelines during operation. Because of its beautiful galvanized appearance, it is often used in faucets, toilets, washing machines and other places.

Then, the choice of tap water valves at home directly excludes triangle valve, and gate valves and ball valves are our main choices. My suggestion is that if there is a lot of space at the water meter, we choose the ball valve. After all, they are durable, long-lived and easy to switch. But if the space is narrow, we can only take the gate valve now. If we choose gate valve, we should choose copper gate valve because it is durable.

Precautions in the purchase of water pipe valves First of all, no matter what kind of valve we buy, we must look at its surface to see if there are cracks, trachoma and other defects on its surface. A good quality valve has a very fine and smooth surface without cracks and trachoma.

In addition, we must check whether there is any problem with the thread of the valve. If the purchased valve screw can't connect to the water pipe, it's useless to buy it back. Be sure to choose the valve with the same thread as the water pipe and water meter screw.

The last point is to choose the pressure of the valve. We should buy a suitable valve according to the water pressure at home. If the water pressure of the valve we buy is too low, it is easy to burst, so we should ask about the water pressure of the valve before buying it or buy it according to the water pressure of the original valve.

If the water meter valve at home can't be twisted and needs to be replaced, we can choose the appropriate water valve to replace it according to the types of tap water valves we have arranged and the amount of precautions for buying water pipe valves.