How to prevent water pipes from freezing and cracking in winter, and will water pipes freeze and cra

Do a good job of thermal insulation protection so that it is not exposed, and leave a water outlet for a long time if necessary.

Water pipes freeze and crack at minus a few degrees depending on the material. The PVC pipe wall can resist the low temperature of about minus 5 degrees, and the pipe wall can resist the low temperature of about minus 10 degrees. Water pipes can freeze, and as long as the local temperature is low enough and there are no reliable antifreeze measures, the water inside the pipes will freeze.

Water expands when it freezes. PVC pipes themselves are easy to weather, and if there is water inside, it is easy to freeze and crack in winter, which will affect the use and cause accidents. As long as the local temperature is low enough and there are no reliable freeze protection measures, the water inside the water pipes will freeze.

If it will crack, the water will be ice, and the ice will shrink, and the water pipe will shrink with it, and it will crack after a long time.

There is generally no problem indoors, and insulation cotton is installed outdoors.

Probably, the water freezes and the volume expands.

Stagnant water will be, and flowing water will be fine.

In winter, the temperature decreases, the metal ductility is poor, the pressure is weak, the water molecular structure in the water pipe changes and reorganizes, the intermolecular spacing is tighter, and the intermolecular repulsion force will become larger.

Burst prevention measures:

1. If the pipe is in the backlight, it is more appropriate to bury it deeply, and the depth is about meters.

2. For water pipes, water meters, faucets and other water facilities exposed to the outdoors, cotton and linen fabrics and plastic foam can be used for bandaging and insulation. Plug the gaps with old cotton fabric and close the water meter observation opening; Outdoor pipes are warmed, and can be wrapped and bandaged with cotton, linen silk or straw rope; Water pipes, water meters, faucets and other water facilities in the home code can be thickened and tightened with insulation materials such as cotton and linen fabrics and asbestos.

3. At night, the windows of the kitchen, toilet and all shady rooms should be closed to ensure that the indoor temperature is above zero degrees Celsius; For rooms where the indoor temperature is below freezing, close the indoor water meter valve, turn on the faucet, and drain the remaining water in the water pipe. If the temperature is minus 5 degrees, turn on the faucet slightly after using water at night to make the water flow less likely to be frozen.

4. If the water pipe is frozen, do not twist it strongly, wrap the water pipe with a towel, and slowly pour it with warm water, remember not to use hot boiling water, otherwise the faucet is easy to burst due to strong heat. If it doesn't work, it means that the water meter is frozen, and use a towel to keep the warm water and pour it slowly.

Why are water pipes prone to freezing and cracking in winter, because after the water freezes, the volume increases, and the water pipes shrink, so they are stretched out of cracks. Another important reason is that plastic pipes and steel pipes become brittle at low temperatures, and their pressure resistance decreases sharply, so they are easy to be cracked.