Differences between VS4 and VS6 pumps
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What is the difference between VS4 and VS6 pumps? In what types of devices are these two pumps generally used?
VS4: Vertical (long-axis type), with the liquid outlet pipe external; the upper bearing is lubricated with ester, and the shafting is supported by the sliding bearings below. VS6: Vertical cartridge pump; VS1 with an outer cylinder becomes VS6, featuring a double-shell design and a guide shell, with guide vanes serving a hydraulic function. They are all submersible pumps.
VS4: Vertical submersible pump (suspended type, single-spool casing, long-shaft driven oil pool pump)； VS6: Double-pump casing, with an inner guide-casing type, vertical suspended pump ；