Pumps

Finish Thompson DB3, 4 and 5 Series magnetic drive, seal-less pumps are the new standard for hydraulic efficiency and corrosive fluid handling. These fractional horsepower pumps can be used for highly corrosive or mild chemicals, acids or solvents at flows to 20 GPM or up to 35 feet of head pressure. DB5.5 Series pumps perform up to 30 gpm or head pressures to 30 feet. Constructed from polypropylene or PVDF, the DB Series operates durably in the most corrosive of environments. It can even run dry without damage when supplied with carbon bushing.

Flow Range
• DB3: 0.25 to 15.1 gpm   • DB4: 0.25 to 18.0 gpm   • DB5: 0.25 to 19.4 gpm   • DB5.5: 0.25 to 30.0 gpm

Finish Thompson DB3, 4 and 5 Series magnetic drive, seal-less pumps are the new standard for hydraulic efficiency and corrosive fluid handling. These fractional horsepower pumps can be used for highly corrosive or mild chemicals, acids or solvents at flows to 20 GPM or up to 35 feet of head pressure. DB5.5 Series pumps perform up to 30 gpm or head pressures to 30 feet. Constructed from polypropylene or PVDF, the DB Series operates durably in the most corrosive of environments. It can even run dry without damage when supplied with carbon bushing.

Flow Range
• DB3: 0.25 to 15.1 gpm   • DB4: 0.25 to 18.0 gpm   • DB5: 0.25 to 19.4 gpm   • DB5.5: 0.25 to 30.0 gpm

Simple, versatile and reliable, March Series 3 pumps feature an “orbital” magnetic drive and leakproof design. They are rated up to 10 gpm flow and for heads up to 20.5 ft. Typical applications include film processsors, ice makers, laboratory and medical equipment, vapor degreasers and marine air conditioning systems. The Series 3 pumps are available in both open air and epoxy clad submersible models. A variety of materials of construction ensure compatibility with almost any solutions: polypropylene, Delrin®, Viton®, nylon Buna N rubber, ceramic, and polysulfil plastic (submersible models). Port options are 3/4" FPT inlet with 1/2” MPT outlet or 3/4" O.D. smooth inlet and outlet, for tubing connections.

March Series 5 pumps are ideal for a wide variety of applications involving highly corrosive chemicals, such as film process chemical recirculation, refrigerators, small fume scrubbers and detergent mixers. Models constructed of Kynar® PVDF are typically used in the plating industry to pump strong halogen solutions and concentrated chromic or sulfuric acid. The Series 5 pumps are rated to 18 gpm flow and for heads up to 29 feet ( or 50 feet with air motor ). Connections sizes - 1" FPT inlet and 1/2" MPT outlet. Materials of construction on the Series 5 are the widest in the March line affording maximum compatibility with a variety of solutions. These materials included polypropylene, carbon-filled Kynar®, 316 stainless steel, ceramic and Viton®. Submersible models are available. Priming Reservoir Option - Wetted materials are polypropylene and Viton®. Series 5 - maximum suction lift of 10 feet.