o negative pressure frequency conversion water supply equipment is a municipal pipe network for water, make full use of the municipal pipe network pressure, original form closed continuous relay pressurized water supply mode, energy saving effect is good, no secondary pollution of water quality, is the development and extension of variable frequency constant pressure water supply equipment. In the municipal pipe network pressure directly on the basis of the overlying water supply, energy conservation, and also a totally enclosed, pollution-free, covers an area of small, fast installation, reliable operation, easy maintenance, and many other advantages.

No negative pressure frequency conversion water supply equipment put into use, tap water pipe network of water flows into the steady flow tank, tank air from a vacuum eliminator, after being filled with water, vacuum eliminator automatically shut down. When the tap water pipe network pressure can meet the water requirement, system directly by the bypass valve to the water pipe network of water supply; When can not meet the requirement of the water, tap water pipe network pressure, system pressure feedback signal by far eastone pressure gauge to the frequency conversion controller, the pump running, and automatically adjust the rotate speed constant pressure water supply according to the size of the water, if running water pump to industrial frequency speed, start another pump operation. If water supply pump, water pipeline network of water is greater than the pump flow, system maintain normal water supply: water peak, if the tap water pipe network of water less than a small amount of pump flow, steady flow tank water supplement water can still normal water supply, at this point, the air from the vacuum eliminator to steady flow tank, tank vacuum destroyed, ensures that the tap water pipe network does not produce negative pressure, the water after the peak, the status back to normal water supply system. When the tap water pipe network of water, resulting in steady flow tank liquid level falling, liquid level detector will feedback the signal to the frequency conversion controller, pump automatic stop, in order to protect the pump unit. Small flow water and tap water pipe network pressure at night can't meet the requirements, pressure tank can store and release energy, to avoid the pump frequently.

The seven advantages

1, no pollution, no pool and the water box, never all the water tightly closed form operation, no secondary pollution.

2, low investment, no pool construction and water box, often without cleaning, disinfection, saving more than one hundred percent of the construction fee and late 50 cleaning protection money.

3, covers an area of less, do not need to build the pool and the water box, space facilities. Set aside a pool of location and even can be used to do a parking Spaces, and increase yield.