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The Humboldt H-12020 Chapman aspirator filter pump has a ball-type check valve to prevent water backflow on loss of pressure and is suitable for vacuum filtrations in a variety of pressure conditions. It has a barbed tail and side arm for connection to flexible tubing. The nickel-plated pump resists corrosion and has a 3/8" National Pipe Taper (NPT) thread water inlet connection and a 5.375" length. The package contains 10 pumps.
Humboldt Manufacturing manufactures testing equipment for construction materials and soil. The company, founded in 1909, is headquartered in Elgin, IL.
Tim Perfetto
Reviewed in the United States on August 16, 2014
As advertised
shlomo levy
Reviewed in the United States on November 29, 2012
the represent of the product in the Web site not reflecting in fair way the product , all so the technical specifications
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