Alpha2 15-55SF/LC Variable Speed Stainless Steel Circulator Pump w/ IFC, Line Cord, 1/16 HP, 115V


Brand: Grundfos

Mfr Part#: 99163972

Model: Alpha2 15-55SF/LC

Availability: In Stock
Usually ships: within 1 business day
Qty Price
$299.95 / each & Free Shipping
x2 $579.90 & Free Shipping
(2 x $289.95 / each)
  • Description
  • Literature
  • Reviews
  • FAQs (2)

Alpha2 15-55SF/LC model is a stainless stee variable speed circulator with Line Cord & AutoADAPT feature, designed for use in a variety of heating, plumbing and cooling applications. It is certified lead-free, approved for potable water applications and meets NSF61 & 372 standards.
Note: this model replaces older Alpha model 59896834.


  • New and improved version of Grundfos bestselling Alpha circulator;
  • AutoADAPT feature allows the circulator to adapt to changes in the hydronci system to maximize energy savings;
  • Push button allows to select between AutoADAPT, constant speed (3 settings - Hi/Med/Low) or contant pressure (3 settings) modes;
  • Large LED display;
  • Built-in check valve;
  • Insulation jacket and (2) gaskets (O-rings) included;
  • Permanent magnet motor technology with robust startup enables pump to restart indefinitely when rotor is blocked;
  • Stainless steel body for closed or open-loop heating and potable applications;
  • Standard flange accepts Grundfos GF15/26 and other brand flanges;
  • Model with US standard 3-prong Line Cord;
  • Certified lead-free;
  • Made in the USA.

Technical Specifications:

  • Voltage: 115V;
  • Amperage: 0.65A;
  • Hertz: 60;
  • Phase: 1;
  • Watts: 5 - 45W (depending on mode selected);
  • Wiring: Line Cord w/ Plug;
  • Temperature Range: 36°F - 230°F;
  • Max Pressure: 150 psi;
  • Flow range: 0 - 21 GPM;
  • Head Range: 0 - 19 ft of head;
  • Material: Stainless Steel;
  • Application: Plumbing or Heating.


1 year from the date of installation
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Can Webstone 50403-2 flanges be used with this pump?
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Answered on 6/20/2016 by PexUniverse Customer Service
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which flanges should be used with grundfos alpha (59896834) stainless steel circulator pump?
Read 1 answer
You can use Grundfos bronze GF15/26 flanges or flange isolation valves.
Answered on 5/20/2013 by PexUniverse Customer Service
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