Hot Water Circulator Pumps
Hot water circulator pumps are used in solar hot water systems and radiant heating systems to move water through thermal solar collectors and indoor heat exchangers, radiators and radiant under floor systems. These pumps are also useful for circulating other low head pressure water circulation.
Hartell MD-10-HEH Circulator
As of June 2015 Hartell has discontinued manufacturing of their circulator pumps. There are none left in inventory.
Hartell's MD-10-HEH circulator pump has a 30,000 hour life with electronically-commutated high-efficiency brushless motor that operates from a 20 to 22 W solar module or directly from a 12 VDC battery system.
Works well for closed-loop solar water heating systems and radiant floor heating.
Ivan Labs Inc.
El-Sid's magnetic-drive circulators runs directly from PV modules or 12 VDC batteries for closed-loop circulation in solar water heating systems and individual loops of radiant floor heating systems. Using several small pumps in a radiant floor system allows each loop to be controlled by a different thermostat. Maximum temperature 250 F at 60 PSI.
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