HAND PUMPS, NAMELY PETROLEUM HAND PUMPS, BILGE PUMPS FOR USE IN BOATS AND WATERCRAFT, WATER PUMPS FOR USE AS A SUMP PUMP, ACID TRANSFER PUMPS, ALKALI TRANSFER PUMPS FOR USE IN CHEMICAL AND AGRICULTURAL INDUSTRIES, SANITARY MAINTENANCE PUMPS FOR USE WITH OUTHOUSES, AND DAIRY CHEMICAL TRANSFER PUMPS