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Circulator Pumps

Circulators and re-circulating pumps for residential and commercial hot water heating, domestic water recirculation and chilled water cooling applications.

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Product Description Part# / Brand Qty Unit Price
Bumble Bee Variable Speed Circulator Pump w/ IFC, Swivel Flange, 1/20 HP, 115V, 230V

HEC-2
Taco
 
x1
$173.95 / each
UPS15-58FC 3-Speed Circulator Pump w/ IFC, 1/25 HP, 115V

Free shipping

59896341
Grundfos
 
x1
$81.75 / each
007 Circulator Pump, 1/25 HP, 115V



007-F5
Taco
 
x1
$75.95 / each
x2
$146.50 / box
($73.25 / each)
UPS15-58FRC 3-Speed Circulator Pump w/ IFC, 1/25 HP, 115V

Free shipping

59896343
Grundfos
 
x1
$81.75 / each
007 Circulator Pump w/ IFC, 1/25 HP, 115V

007-F5-7IFC
Taco
 
x1
$76.95 / each
x2
$151.00 / box
($75.50 / each)
Alpha 15-55F/LC Variable Speed Circulator Pump w/ IFC, Line Cord, 1/16 HP, 115V

Free shipping

59896832
Grundfos
x1
$156.95 / each
007 Circulator Pump w/ IFC, 1/25 HP, 115V

007-F5-8IFC
Taco
x1
$78.95 / each
x2
$154.30 / box
($77.15 / each)
Alpha 15-55F Variable Speed Circulator Pump w/ IFC, 1/16 HP, 115V

Free shipping

59896877
Grundfos
 
x1
$156.95 / each
0015 3-Speed Circulator Pump w/ IFC, Rotated Flange, 1/20 HP, 115V

0015-MSF3-1IFC
Taco
 
x1
$79.95 / each
x2
$153.00 / box
($76.50 / each)
Alpha 15-55FR/LC Variable Speed Circulator Pump w/ IFC, Line Cord, 1/16 HP, 115V

Free shipping

59896833
Grundfos
x1
$156.95 / each
0015 3-Speed Circulator Pump w/ IFC, 1/20 HP, 115V

0015-MSF2-IFC
Taco
x1
$79.95 / each
x2
$153.00 / box
($76.50 / each)
Alpha 15-55FR Variable Speed Circulator Pump w/ IFC, 1/16 HP, 115V

Free shipping

59896878
Grundfos
x1
$156.95 / each
005 Circulator Pump, 1/35 HP, 115V

005-F2
Taco
x1
$77.95 / each
UP15-10F Circulator Pump, 1/25 HP, 115V

59896248
Grundfos
 
x1
$83.95 / each
005 Stainless Steel Circulator Pump, 1/35 HP, 115V

005-SF2
Taco
 
x1
$225.95 / each
UP15-10FR Circulator Pump, 1/25 HP, 115V

59896249
Grundfos
x1
$83.95 / each
UP15-42F Circulator Pump, 1/25 HP, 115V

59896155
Grundfos
 
x1
$78.75 / each
006 Bronze Circulator Pump, 3/4" Sweat, 1/40 HP, 115V

006-B4
Taco
x1
$169.95 / each
UP15-42FR Circulator Pump, 1/25 HP, 115V

59896167
Grundfos
 
x1
$78.75 / each
006 Bronze Circulator Pump, 1/2" Sweat, 1/40 HP, 115V

006-BC4
Taco
x1
$169.95 / each
UP15-100F Circulator Pump, 1/25 HP, 115V

59896300
Grundfos
 
x1
$151.95 / each
006 Circulator Pump, 1/40 HP, 115V

006-F4
Taco
x1
$104.95 / each
UP26-64F Circulator Pump, 1/12 HP, 115V

52722330
Grundfos
 
x1
$226.95 / each
006 Stainless Steel Circulator Pump, 1-1/4" Union, 1/40 HP, 115V

006-SC4-1
Taco
x1
$169.95 / each
UP26-99F Circulator Pump, 1/6 HP, 115V

52722355
Grundfos
x1
$237.95 / each
006 Stainless Steel Circulator Pump, 3/4" NPT, 1/40 HP, 115V

006-ST4
Taco
 
x1
$162.95 / each
UPS26-99FC 3-Speed Circulator Pump w/ IFC, 1/6 HP, 115V

52722512
Grundfos
x1
$241.95 / each
UP43-44F Circulator Pump, 1/6 HP, 115V

Free shipping

52722437
Grundfos
x1
$289.95 / each
UP43-75F Circulator Pump, 1/6 HP, 115V

Free shipping

52722373
Grundfos
x1
$289.95 / each
UPS43-44FC 3-Speed Circulator Pump w/ IFC, 1/6 HP, 115V

Free shipping

52722514
Grundfos
x1
$289.95 / each
UP15-10B5 Bronze Circulator Pump, 1/2" Sweat, 1/25 HP, 115V

59896213
Grundfos
 
x1
$152.95 / each
007 Stainless Steel Circulator Pump, 1/25 HP, 115V

Free shipping

007-SF5
Taco
 
x1
$258.95 / each
x2
$501.90 / box
($250.95 / each)
UP15-10B5/LC Bronze Circulator Pump w/ Line Cord, 1/2" Sweat, 1/25 HP, 115V

59896214
Grundfos
x1
$165.95 / each
007 Stainless Steel Circulator Pump w/ IFC, 1/25 HP, 115V

Free shipping

007-SF5-IFC
Taco
x1
$289.75 / each
UP15-10B5/TLC Bronze Circulator Pump w/ Timer & Line Cord, 1/2" Sweat, 1/25 HP, 115V

59896215
Grundfos
x1
$196.95 / each
UP15-10BUC5 Bronze Circulator Pump w/ IFC, 1/2" Sweat (Union), 1/25 HP, 115V

59896225
Grundfos
x1
$169.95 / each
007 Priority Zoning Circulator Pump w/ IFC, 1/25 HP, 115V

Free shipping

007-ZF5-3IFC
Taco
x1
$175.95 / each
UP15-10B7 Bronze Circulator Pump, 3/4" Sweat, 1/25 HP, 115V

59896226
Grundfos
x1
$164.95 / each
007 Priority Zoning Circulator Pump, 1/25 HP, 115V

Free shipping

007-ZF5-9
Taco
x1
$160.95 / each
UP15-10BUC7 Bronze Circulator Pump w/ IFC, 3/4" Sweat (Union), 1/25 HP, 115V

59896241
Grundfos
 
x1
$178.95 / each
008 Circulator Pump, 1/25 HP, 115V

008-F6
Taco
x1
$119.50 / each
UP15-18B5 Bronze Circulator Pump, 1/2" Sweat, 1/25 HP, 115V

59896114
Grundfos
x1
$145.95 / each
008 Circulator Pump w/ IFC, 1/25 HP, 115V

008-F6-1IFC
Taco
 
x1
$125.95 / each
UP15-18B5/LC Bronze Circulator Pump w/ Line Cord, 1/2" Sweat, 1/25 HP, 115V

59896211
Grundfos
x1
$166.95 / each
008 Stainless Steel Circulator Pump, 1/25 HP, 115V

Free shipping


008-SF6
Taco
x1
$284.95 / each
UP15-18BUC5 Bronze Circulator Pump w/ IFC, 1/2" Sweat (Union), 1/25 HP, 115V

59896123
Grundfos
x1
$169.95 / each
UP15-18B7 Bronze Circulator Pump, 3/4" Sweat, 1/25 HP, 115V

59896121
Grundfos
x1
$162.95 / each
UP15-18BUC7 Bronze Circulator Pump w/ IFC, 3/4" Sweat (Union), 1/25 HP, 115V

59896124
Grundfos
x1
$175.95 / each
009 Circulator Pump, 1/8 HP, 115V

009-F5
Taco
 
x1
$215.95 / each
x2
$421.90 / box
($210.95 / each)
UP15-42B5 Bronze Circulator Pump, 1/2" Sweat, 1/25 HP, 115V

59896145
Grundfos
x1
$197.95 / each
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About Circulator Pumps

Circulator or circulating pumps belong to the centrifugal pumps category and incorporate a metal volute, direct drive motor and wet-rotor cartridge design. Unlike traditional pumps, which are sized to overcome both the internal friction of water against the pipe walls and external factor of elevation height, circulating pumps are installed in pressurized systems and are sized accounting only for internal pressure drop. Powered by an external source, such as an aquastat or a switching relay, circulators have either terminal box (hardwired) connections or come with a power cord with a plug.

Applications

Most common uses of circulator pumps include closed-loop boiler, hydronic or radiant heating systems and open-loop domestic hot water recirculation systems. Others include fan coils, geothermal systems, solar systems and chilled water cooling.
Among popular heating applications is zoning with circulators, where each unit is selected to meet individual zone requirements and several pumps are wired to an external control, such as a circulator switching relay, which coordinates their operation and allows for temperature control via one or series of thermostats.

Materials of Construction

  • Cast Iron - a standard material of choice for closed-loop circulating applications due to low cost and good performance of cast iron in de-oxygenated water.
  • Bronze - typical for open loop applications, such as hot water recirculation in a plumbing system. Bronze housing is the only one which offers sweat connection options, allowing for convenient installation in-line with a copper pipe without the need for adapters or flanges.
  • Stainless Steel - material of choice for open-loop applications owing to excellent corrosion resistance and good performance of steel at high temperatures. Stainless steel circulators are gradually replacing older, heavier and more costly bronze models.
Both bronze and stainless steel circulators available at PexUniverse are lead-free compliant and are approved for potable water applications.

Single, 3-Speed and Variable Speed Circulator Types

  • Single speed circulators - are the most basic models with a fixed flow pattern at a given pressure drop in the system.
  • 3-Speed circulators - come with a 3-speed switch, usually marked Hi/Med/Lo, enabling the functionality of 3 pumps in one.
  • Variable speed circulators - the latest innovation in the circulating pumps industry, with automatic adjustment of pumps’ operation to match the changing conditions and requirements of the heating system.

Sizing a circulator pump

Flow output of a circulator, typically expressed in Gallons Per Minute (GPM), is determined by the heat load in the given zone or loop and other factors such as temperature drop (delta T), R-values of the insulation, etc.
Head pressure, expressed in feet of head or PSI, is calculated by combining the pressure drop across other system components in line with the pump, such as boiler itself, heat exchangers, mixing and zone valves, as well as friction loss in the piping.
The results are compared against the pump curve chart, and model is selected with head and flow parameters which are at or above the calculated numbers.

The maximum pumping height of the circulator installed in a pressurized system can be determined by the following formula:
System Pressure (in psi) x 2.31 = Elevation (in ft);
In a typical residential hot water heating system, such pressure is adequate for a 2-3 storey building.

Taco and Grundfos circulator pumps with 1/6 HP motor and below are generally used in residential applications. Models with 1/3 HP motor and above - in commercial. Flanges, unions or flange isolating valves are required to connect the piping to the circulator.

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