OVELL

Pump diaphragms; air-operated double-diaphragm (AODD) pumps and structural parts, namely, seats, balls, shafts, air chambers, air filters, regulators, liquid chambers, gaskets, bases, pistons, air valves, air cylinders, retention plates, solenoids, manifolds, elastomers, controls; all of the foregoing sold together as a unit with AODD pumps