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Address: No. 9 Liaohai Road, Yinzhou District, Tieling, Liaoning.
Hydraulic feedback type thick pump
The pump moves with the help of the feed-back force when the pump is operating so the pump is very suitable for sucking heavy crude oil.The pump can work smoothly in a heavy crude oil with the viscosity smaller than 4000 centipoise. There is no standing valve in the pump.It is not necessary to install the oil drainers in down-hole and the well-testing and vapour injection operation can be done without lifting the tubing strings.