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Hot
Water Circulating Pumps
Hartell
MD10HEH Hot Water Circulation Pump
This pump has an electronically commutated, high efficiency brushless
motor with a 30,000 hour life expectancy. It may be operated from
an 18 to 22 watt solar module or directly from a 12 volt battery system.
They work well for closed loop solar water heating systems and radiant
floor heating. The graph shows this pumps performance at various heads
and flows, at different input voltages. |
Hartell
MD3DCL Hot Water Circulating Pump
This pump has an economical brush-type motor that may be used with
a 12 or 24 volt battery system, or directly from an 18 watt 12 volt
PV module. It has a 7,000 hour life expectancy. It works well as a
circulating pump between a tank and solar collector in a domestic
hot water system. It also functions well as a circulating pump in
a radiant floor heating system that requires less than 5 GPM of circulation. |
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Operating
Voltage |
Pipe
Connections |
Dimensions |
Item
Code |
Price |
| Hartell
MD-10-HEH, High Speed Brushless Pump |
6-16
VDC |
1/2"MNPT |
5.25
x 9 inches |
75.7237 |
$380.00 |
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| Hartell
MD-3-DCL, Low Speed Magnetic Pump |
2-24VDC |
1/2"MNPT |
5.25
x 7 inches |
75.7241 |
$199.00 |
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EL-SID
Brushless Hot Water Circulation Pump
These tiny brushless, magnetic drive circulators can be driven by
PV modules or 12 volt batteries for closed-loop circulation in solar
water heating systems, individual space heat zones and individual
loop radiant floor loops. Use of several small pumps in a radiant
floor system allows each loop to be controlled by a different thermostat.
Model SID10 is designed to be powered by a 10 watt PV module and can
pump 2.5 gallons per minute at no head and ½ GPM at 2.5 feet of head
at 17 volts input. It can circulate water in a well designed solar
water heating system with two 4 x 10 collectors. Model SID10B is designed
to be battery powered and has the same specifications at 12 volts. |
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Max
voltage |
Size
(in.) |
Item
code |
Weight
(lb) |
Price |
| El-Sid
10 |
15 |
4
x 4 x 5 |
75.7218 |
2
|
$248.00 |
| El-Sid
10 B |
18 |
4
x 4 x 5 |
75.7219 |
2 |
$248.00 |
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