1. :A flow center that typically consists of circulating pumps mounted in a cabinet. 2. Note that circulating pumps usually do not generate enough pressure to overcome air locks. 3. At noon, fire broke out in the main motor auxiliary circulating pump and was extinguished. 4. For example, a central heating system using a circulating pump to pump water through radiators. 5. Direct exchange systems eliminate the plastic water pipe and water circulating pump found in water-source geothermal systems. 6. In addition to the boiler, pipes, radiators and circulating pump , hot-water systems also have an expansion tank. 7. To drain the water from a hot water system, first shut off the switch to the circulating pump . 8. There are two types of solar water heating systems : active, which have circulating pumps and controls, and passive, which don't. 9. Attempts were made to use the engine circulating pumps as additional bilge pumps, but the rapid rise of water prevented this. 10. You gain weight without eating, your body's water pools at the extremities, bloating them for lack of a strong enough circulating pump .