This device which is able to fulfill increasing pressure and water-injection of oil well with efficient and saving energy, has got national patent. The device utilizes the principle of volume conservation and pressure redistributed, finishing change of direction of fluid cyclinder and separate flow of high and low pressure suitable to water-injection these wells at the same time which need to increase pressure or have low pressure with high-premeablity.
1. save energy: it is drove by a electric motor with small power
2. easy to regulate: it can realize steppless pressure-regulating within allowable scope
3. run steadily and reliability with long life
4. good sealing: with high-quality sealing parts
5. no one being duty on the worksite, controlled by a sensor
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