M Series Positive Displacement Flow Meter 50-1 Convenient and easy Firmly and stable customize ... classic design. Multi products dispensers, multi nozzles are for multi products, available as suction pump or submersible pump ... in1, 2, 4, 6 or 8 horses respectively for 2, 3 or 4 oil products configuration. Option ... choose, your investment will keep paying off for years to come. M-50-1 Series PD Flow Meter