condition: good make / manufacturer: G.H. Steiner & Co.,Inc. model name / number: D-11740-BG size / dimensions: 10.5 x 6.5 inches
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85MHP17, Stenner Peristaltic Pump, Stenner Chemical Feed Pump, Stenner Metering Pump and 24 Gallon Solution Poly Tank. I used this for pH balance to the house water supply. Mostly for my fish tank, which I just sold, so now the pump is for sale. I bought it new in 1997. I've replaced the head once. and the peristaltic tubes about every year. The head is hard plastic and has a crack but functions well.
Stenner Pumps 85MHP17 adjustable chemical feeder is built with three detachable components: the motor, feed rate control, and pump head. Outputs are dependent upon three factors: the rpm of the motor gears, the percentage setting on the feed rate control, and the size of the peristaltic pump tube. All of Stenner Pumps chemical feed pumps have a 3-point roller design in the pump head, which acts as a check valve to prevent back flow, siphoning, overdosing and loss of prime
The motor shaft rotates at a fixed rpm which drives the adjustable feed rate control to intermittently engage the roller assembly within the pump head. The chemical solution in the pump tube is captured between the rollers as they rotate and compress the tube. As the rollers advance, the squeezed tube section regains its original form and generates a vacuum, creating the self-priming feature that delivers a constant flow unaffected by the outlet pressure.
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