MIXING DRUM PUMPSExamples of Liquids: Universal requirements of laboratory application (light-duty chemicals). Ideal for narrow necked containers. ; MIXING DRUM PUMPS: Mixing pump tube is to be used where it is necessary to mix and pump in a single operation. Ideal for use in containers or in drums with a 2" bunghole. Drive shaft of pump tube is sealed by a single-acting mechanical seal and two shaft seals. Pump tube must not be allowed to run dry. Comes with 39" pump tube and stainless steel drive shaft. NOTE: Only DB837and DB829can be used for flammable liquids and include static kit. ; ; C. Drive motor: Double insulated, splash-proof universal motor 115 V ; ; Note: Models DB838, DB816, DB821, DB822, DB829 and DB830 come with Hastelloy C drive shaft. ; Pumps that have a stainless steel construction come with a wall hanger, 10 ft. bonding wire and 26' grounding wires. ; Pumps that have a polypropylene construction come with a barrel adaptor, a wall hanger, 8' PVC hose and hose c-clamps (except DB827) .Universal requirements of laboratory application (light-duty chemicals). Ideal for narrow necked containers.