Pumps
and Flanges
Pumps or circulator pumps are an integral
part of any Hydronic system. The pumps are used to send
water to an area of the hydronic system when it is called
for, or to keep the flow of water in the system. For
proper installation the pumps should be purchased with
a pair of flanges to connect to the water line.
Circulator Pumps play a pivotal role in
hydronic heating systems. A circulator pump is responsible
for moving the fluid throughout the system. Pumps must
be sized correctly in order for a Radiant Heat System
to work properly. The two factors that are used to determine
pump size are flow rate and pressure loss. Flow rate
is measured in gallons per minute (gpm). Pressure loss
is measured in feet of head. When both of these measurements
are known a pump may be accurately selected.
Most manufacturers offer a pump curve
that can be used to size a pump. Below is the Taco pump
curve. On the y-axis is head loss and on the x-axis
is flow rate. Taco offers a full line of pumps that
can meet the needs of hydronic heating systems. The
ideal pump meets the exact flow rate and pressure loss
that is required. However, if a Taco Pump doesn't meet
the requirements exactly, the pump that meets the requirements
and is the closest match should be selected.
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