What is the demarcation point of indoor pipeline, outdoor pipeline and municipal pipeline?

Specifies the pressure of the pipeline.

The pressures shown in the PVC-U water supply pipeline are all nominal pressures, and the unit is Mpa, 1Mpa≈ 10kgf/cm2. However, with the increase of the medium temperature (not conveying >: 50℃ medium), the working pressure decreases, so it is objectively necessary to consider the safety factor of sufficient pressure when selecting the water supply pipeline. The nominal pressures of water supply pipes are specified as 0.6 MPa, 0.8 MPa, 1.0 MPa, 1.25 MPa and 1.6 MPa.

Nominal pressure of pipes of the same specification divided by the wall thickness of the pipes. The minimum diameter of each pressure zone is as follows: the minimum diameter of 0.6Mpa pipeline is 63mm, that of 0.8Mpa pipeline is 50mm, that of 1.0Mpa pipeline is 40mm, that of 1.25Mpa pipeline is 32mm, and that of 1.6Mpa pipeline is 20mm and 25 mm. ..

Extended data:

Requirements for pipeline use stipulate that:

1, unified water supply system All kinds of water are supplied to the user's water supply system by the unified water supply pipe network according to the drinking water quality standard. When users are concentrated in the site, there is no need for long-distance water delivery, and the requirements of users for water quality and water pressure are not much different, the unified water supply system will be adopted directly.

2. When the water pressure and water quantity of outdoor water supply pipe network can't meet the requirements of building water use (or the water supply pressure is required to be stable to ensure the safety and reliability of water supply), water supply system should be equipped with water storage equipment such as water pump, pneumatic water supply equipment, pressurization, pool and water tank as required. Water distribution devices and water equipment refer to the water distribution taps and water equipment of various sanitary appliances, as well as water equipment for production and fire fighting.

3. According to its characteristics, it is divided into several systems, each system is relatively independent, and the systems are properly connected to ensure the safety of water supply and the flexibility of dispatching.

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