... best service 4.compact st4 Application of Water Jet Pump: SPB type water jet pump is the current,high efficiency,low energy consumption ... were stable, reliable performance, easy maintenance. SPB-type water-jet pump is the current, high efficiency, low energy consumption of vacuum ... to areas of low vacuum.Specifications of the water jet pump:Material pump Max.Flow rate(m/min) Max.depreeof vacuum(kpa ...