Non-negative water supply equipment is a high efficient  water facility which has characters of easy installation,saving space.

The pump energy efficient, using  converter speed control valve saving a large number of energy, the elimination of the high level of secondary pollution of water tanks,

water tank eliminates the need to wash the cost and trouble,

Water Pump achieve soft-start, start on the grid to reduce the impact of pumps to extend life.

>>> Mass Production 

>>>Features:  

1. Non-negative pressure : The system can connect to the municipal water supply system to boost it and will not cause negative pressure for the municipal water supply system.  

2.High quality, PC controls: Invented by us, have multi-function, can supply high standard precise control. It arrives to the advance level in the world.

3.Boosting: When the equipment is running, it can use the pressure that water supply network supplies and boost base on this,  Compared to suck water from the normal water pool, it can use less pump or lower the rotation to save energy.  

4.Not stop water supply when power is off:  When the power supply is out off power, system can supply water with 747D and .bypass, etc, that is, system can supply water with the municipal water supply pressure.  

5.Clean:   The flow parts are all stainless steel which is the material of food grade, it is conform to the international water related rules.  The cabinet type non-negative device can ensure the water in the cabinet to be circulated by the usage of residents. The closed type non-negative device can circulate real-timely to ensure the safety of the water.  

6.Energy Saving   The system needs not the water pool etc, to store the water, which save the space, the system works high efficiently, which can save 60% energy, there is pressure of the municipal water network. When running the system only need to boost on the pressure of municipal water network, the system need not to be monitored by people, and need not the water pool, etc. And there is no water quality handling machine it is not needed to be cleaned and disinfected timely. So energy saving is obvious.

>>>Technology Parameters:

Flow:6-3000m3/h;

Lift head:30-200m

Working pressure :0-2.7MPa;

Temperature range:≤80°C;

>>>Full-automatic Control (Easy and Safe Controlling)

1. Solenoid Valve: Pressure backflow protection

2. Flow Sensor

3.Vacuum Pressure Sensor: Can know the inlet pressure,  once the valves all colosed,  will start reflux. 

4. Flow Switch: if no water pass, the pump will stop working
 

>>>Prodution Pictures: 

>>>Main Application:

1. Residential water supply: High building, residential area, villa, etc

2. Public places: Hospital, university, gymnasium, golf course, airport, etc.

3. Commercial building: Hotel, office building, department store, large-scale sauna center.

4. Irrigation: Park, playing round, garden, farm, etc.

5. Manufacturing industry: Manufacturing, lavation equipment, food industry, factory, etc. Other: Rebuild of water pool or other form.
>>>Zhejiang Yonjou Technology Co., Ltd is specialized in manufacturing high quality oil pump, diaphragm pump, Diesel engine pump set, centrifugal pump etc.