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INTRODUCTION

Water supply method of building water supply system:


1.Direct water supply Features: the system is simple, the investment is small, can make full use of the water pressure of the outer network, but once the outer network stop water, the indoor immediately cut off water.Applicable place: water use place where water quantity and water pressure can meet the demand of water use in one day.


2. Water supply method with cistern, water tank and water pump Features: the water pump can timely supply water to the water tank, can reduce the volume of the water tank, reliable water supply, large investment, installation and maintenance are more complex.Applicable place: when the water pressure of the outdoor water supply network is lower than or often cannot meet the water pressure required by the internal water supply network of the building, and the indoor water is not uniform, it should be adopted.


3. Pneumatic water supply mode Features: reliable water supply, no high water tank, but low pump efficiency, energy consumption.Applicable place: the water pressure of the outer network can not meet the required water pressure, the water is not uniform, and is not suitable for the use of water tank.


4. Water supply method in zones Features: can make full use of external network pressure, water supply security, but large investment, complex maintenance.Applicable place: the water supply pressure can only meet the water supply requirements of the lower floor of the building.


Valve location of building water supply pipeline

1.The water supply pipeline of residential area is from the introduction pipe section of municipal water supply pipeline;

2. Starting end of branch pipe or starting end of household pipe connected to the main water supply pipe of residential area;

3. Inlet pipe, water meter and branch risers (bottom of riser, upper and lower end of vertical ring pipe)

4. The ring pipe network is divided into the main pipe and the connecting pipe through the branch pipe network;

5. The water outlet pipe of the water pump, the suction pump of the self-filling water pump;

6. The inlet and outlet pipes and drain pipes of the water tank;

7. Inlet water refill pipe of equipment (such as heater, cooling tower, etc.);

8. Sanitary appliances (such as large, urinal, washbasin, shower, etc.) with water pipes;

9. Drainage valves should be installed at the lowest point of the water supply network.

General Configuration List
No.NamePressureConfigurationUnit
1 Soft seal gate valve PN16 Body: DI, Seal: EPDM
Disc: DI+EPDM		 set
2 Y strainer PN16 Body: DI, Strainer: 304
End cover: DI		 set
3 Worm gear butterfly valve PN16 Body: DI, Seat: EPDM
Disc: DI		 set
4 Rubber joint PN16 Flange: Q235
Body Materials: EPDM		 set
5 Butterfly check valve PN16 Body: DI, Seal: EPDM
Disc: DI		 set

Community water supply system valve distribution diagram

Ball valve

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