Grundfos UP1542-F


Pump, Circulator, 1/25hp

UP1542-F 73781
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ItemCirculator Pump
TypeClosed Loop
Housing MaterialCast Iron
Face to Face Dimension (In.)6-1/2
Max. Temp. (F)230
Max. Working Pressure (PSI)145
Flange/Union IncludedNo
Shut-Off (Ft.)15.6
Thermal ProtectionAuto
GPM of Water @ 1 Ft. of Head18.5
GPM of Water @ 2 Ft. of Head17.4
GPM of Water @ 3 Ft. of Head16.4
GPM of Water @ 4 Ft. of Head15.4
GPM of Water @ 5 Ft. of Head14.5
GPM of Water @ 6 Ft. of Head13.5
GPM of Water @ 7 Ft. of Head12.4
GPM of Water @ 9 Ft. of Head10.2
GPM of Water @ 11 Ft. of Head7.7
GPM of Water @ 13 Ft. of Head5.0
GPM of Water @ 15 Ft. of Head1.4
Length (In.)5-1/4
Width (In.)4-3/16
Max. GPM @ Head (Ft.)18.5 @ 1
Best Efficiency GPM @ Head (Ft.)10 @ 7.4
Min. GPM @ Head (Ft.)1.4 @ 15
Gas Connection (In.)1/2
Pipe Size Return (In.)1-1/4
Pipe Size Supply (In.)1-1/2
Vent (In.)Top 6
Weight 7.150000


Circulator Pump, Closed Loop, 1/25 HP, 1 Phase, Voltage 115, 0.74 Amps, Inlet/Outlet Flanged, Housing Material Cast Iron, Max. Temp. 230 F, Max. Working Pressure 145 PSI, Shut-Off 15.6 Ft., 2590 RPM, Auto Thermal Protection

  • Hot Water Return Pumps
  • Can pump mixtures of water and glycol solutions of up to 50% by volume. Designed for domestic and light commercial closed-loop water circulating systems such as hydronic heating, heat pumps, low-pressure boosting, and general water circulating systems. Do not use for potable water systems.
  • 15E562 to 15E573 are 3-speed pumps for most heating and recirculation applications that require high head and moderate flow. 19H332 to 19H339 MAGNA pumps automatically adapt to changes in system requirements and feature an energy-efficient permanent magnet motor.
  • Max. working pressure: 145 psi, except 19H336 to 19H339 are 175 psi Maintenance-free Water lubricated can and rotor system 115V, except 2CGL7, 2CGL9, 2CGN2, 2CGN4, and 19H336 to 19H339 are 230V and 19H332 to 19H335 are 208-230V Flanges sold separately

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