UPS15-55SUC 3-Speed Stainless Steel Circulator Pump w/ IFC, 1-1/4" Union, 1/8 HP, 115V


Brand: Grundfos

Mfr Part#: 59896781

Model: UPS15-55SUC

UPC#: 570083742812

Availability: In Stock
Usually ships: Today, if ordered by 3pm
Qty Price
$346.95 / each & Free Shipping
x2 $663.90 & Free Shipping
(2 x $331.95 / each)
  • Description
  • Literature
  • Reviews (2)
  • FAQs (1)

Grundfos UPS15-55SUC model (Grundfos SKU# 59896781) is a 1/8HP, 3-Speed Stainless Steel Circulator Pump with removable Integral Check Valve and GU125 union connections (1-1/4"). Both stainless steel housing and 3 speeds of the Grundfos UPS15-55SUC model make it suitable for a wide range of applications such as radiant heating, solar, domestic water recirculation, storage tanks, chilled water cooling and many others.


  • Ceramic shaft and radial bearings;
  • Carbon axial bearing;
  • Stainless steel rotor can and bearing plate;
  • Corrosion-resistant impeller, Composite, PES;
  • Stainless steel pump housing;
  • Check valve;
  • Union connection;

Technical Specifications:

  • Speed Number: 3;
  • Max flow: 25.1 US gpm;
  • Head max: 18 ft;
  • Liquid temperature range: 35.6 .. 230 F;
  • Maximum operating pressure: 145 psi;
  • Approvals on nameplate: UL, CSA;
  • Pump housing: Stainless steel;
  • Pump housing: DIN W.-Nr. 1.4301;
  • Pump housing: AISI 304;
  • Impeller: Composite, PES;
  • Maximum ambient temperature: 104 F;
  • Ambient max at 176 F liquid: 176 F;
  • Maximum operating pressure: 145 psi;
  • Flange standard: USA Threaded;
  • Type of connection: S.S. Union;
  • Pipe connection: 1-1/4" NPSM (GU125 Union);
  • Pressure stage: 10;
  • Port-to-port length: 5.87";
  • Number of poles: 2;
  • Power input in speed 1: 56 W;
  • Power input in speed 2: 74 W;
  • Max. power input: 87 W;
  • Rated power in speed 1: 1/8HP;
  • Rated power in speed 2: 1/10HP;
  • Rated power in speed 3: 1/12HP;
  • Main frequency: 60 Hz;
  • Voltage: 115V;
  • Current in speed 1: 0.31 A;
  • Current in speed 2: 0.66 A;
  • Current in speed 3: 0.69 A;
  • Capacitor size - run: 10 mF/180 V;
  • Insulation class (IEC 85): F;
  • Gross weight: 5.4 lbs;


2 years from date of installation.
UPS15-55SUC 3-Speed Stainless Steel Circulator Pump w/ IFC, 1-1/4" Union, 1/8 HP, 115V has an average 5.0 out of 5 rating based on 2 user reviews.
Best pump for tankless recirculation
By Momchil (from Sacramento,CA) on 8/16/2016
I have purchased few of them. I do mostly tankless service calls, this one is a must have in my truck. Old ones fail due to dummy plumbers. Guys-bleed the air out of the system and those pumps will last forever.
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Best circulator for tankless water heater applications
By Mitch (from Los Angeles) on 5/7/2016
Great pump, works perfect, quiet . Union connection is really easy to remove, no leaks
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What is the power consumption?'
Read 1 answer
Power consumption is 56 Watts at 1st Speed, 74W at 2nd and 87W at 3rd.
Answered on 10/16/2017 by PexUniverse Customer Service
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