The Charles Ross & Son Company VSL-400 mixing and pumping skid system is capable of mixing and pumping low to moderately viscous products. It is a custom conical vessel on a movable skid with a progressive cavity pump rated for 10-30 gallons/minute. A 5HP inverter-duty motor drives a flange-mounted turbine mixer equipped with two axial flow impellers. The 34 inch diameter upper blade and 18 inch diameter lower blade maintain batch uniformity from start to finish of the pumping sequence. Both mixer and pump are controlled from a NEMA 4 weather-proof control panel which includes a thermal protection system that disengages the pump motor if a set temperature is exceeded.