Hot Water Pump
Posted in Uncategorized on 07/02/2006 07:50 pm by adminA look at what is currently available on eBay
 HOBART DISHWASHER LXiH-3, SLIGHTLY USED, HOT WATER BOOSTER SANITIZER, DET PUMPS US $4,599.00 
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 4012-10C 4000 PSI Hot Water " Cat Pump US $4,295.00
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 Griswold Hot Water Tank Discharge Pump US $2,297.00
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 Gas Wall Boiler 100k Hot Water Baseboard + Pump US $1,849.00
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 Gas Wall Boiler 70-100k Hot Water Baseboard + Pump US $1,699.00
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 Gas Wall Boiler 50-65k Hot Water Radiant Heat + Pump US $1,675.00
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 Gas Wall Boiler 65k Hot Water Baseboard + Pump US $1,629.00
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 Gas Wall Boiler 50-65k Hot Water Baseboard Heat + Pump US $1,479.00
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 HBX SolarBloc----- Solar Hot Water Pump Control US $700.00
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 Laing Under Sink Instant Hot Water Circulating Pump US $289.00
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 INSTANT HOT WATER GRUNDFOS COMFORT SERIES PUMP US $289.00
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 JABSCO Central heating and hot water circ.pump 12v 59510-0012 US $253.41
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 TACO 15HP Motor, Hot Water Heat Circulating Pump US $300.00
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 Laing Autocirc 2 Instant Hot Water Pump 5 Steps Install US $249.99
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 Watts Premier Instant Hot Water Recirculation Pump NEW US $249.00
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Why is my forced-hot-water system heating when the circulator pump is not running?
I have a forced-hot-water heating system with three zones, first floor, second floor, and water tank. After some maintenance on the system the second floor is constantly heating, even though the thermostat is off. I checked the voltage on the circulator pump and it is zero, so the pump is not running. It sounds like it is acting like a gravity-fed system. There are manual valves on the system, but the only things in the loops that are controlled by the thermostats are the circulator pumps. Do the pumps act as valves when they are not pumping? That was my guess so I replaced the pump, but my registers are still hot. If the pump does NOT act as a valve, what is supposed to prevent the hot water from moving through the system when the pumps are not running? I need some HVAC basics here. Thanks!
It sounds like your flow control valve is stuck! The circulator pumps does not act like a valve. you said you had maintenance done. the person doing the maintenance could have turned the lever on the flow control valve accidentally causing it to gravity feed. If the lever did not get turned TAP on it with a hammer sometimes rust will cause the valve to stick open. I would tap on it first if you are not sure if the valve got turned or not.
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