Industrial pumps and pumping apparatus, namely, air operated double diaphragm pumps, centrigual pumps, seal-less pumps, magnetic pumps, sanitary pumps, hygenic pumps, submersible pumps, self-priming pumps, drum pumps, peristaltic hose pumps, gear pumps, metering pumps, lobe pumps, industrial mixers, turbine pumps, miniature diaphragm pumps, and parts and accessories for all of the foregoing