Grundfos 99163906 ALPHA2 15-55F/LC Cast Iron Variable Speed Circulator Pump [Discontinued]
SKU: 85616235215

Grundfos 99163906 ALPHA2 15-55F/LC Cast Iron Variable Speed Circulator Pump [Discontinued]

$152.10 $169.00
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Description

Grundfos 99163906 ALPHA2 15-55F/LC Cast Iron Variable Speed Circulator Pump [Discontinued]Grundfos 99163906 ALPHA2 15 55F LC Cast Iron Variable Speed Circulator Pump Features: The Grundfos ALPHA2 is a high efficiency, variable speed circulator fitted with electronically commutated motor. Designed for circulating liquids in heating systems. It features a constant pressure control mode and a constant curve with each three settings. The factory default setting is AUTOADAPT which continuously adjusts the pump performance to the actual heat

Grundfos 99163906 ALPHA2 15-55F/LC Cast Iron Variable Speed Circulator Pump

Features:

  • The Grundfos ALPHA2 is a high-efficiency, variable speed circulator fitted with electronically commutated motor. Designed for circulating liquids in heating systems.

    It features a constant pressure control mode and a constant curve with each three settings. The factory default setting is AUTOADAPT which continuously adjusts the pump performance to the actual heat demand, i.e. the size of the system and the changing heat demand during the year. The function will find the setting that provides optimal comfort with minimal energy consumption. It contributes to fast, safe and easy commissioning.

    The intuitive one-button operation and LED display makes the selection of the settings easy. The large LED display shows the current energy consumption in Watts and estimated flow in gallons per minute.

    ALPHA2 materials and design are resistant to blockage from magnetite found in hydronic systems.

    The robust startup enables ALPHA2 to continuously attempt to restart – indefinitely – in blocked rotor conditions.

    ALPHA2 is complete with an integrated check-valve, and nut captures for flanges.

    For power connection two options are available with either line cord or terminal box for conduit connections.

Specifications:

Technical

Head max 18.05 ft
TF class 110
Approvals on nameplate ETL, FCC


Materials

Pump housing Cast iron
EN 1561 EN-GJL-150
Impeller Composite

 

Installation

Range of ambient temperature 32 .. 104 °F
Maximum operating pressure 145.04 psi
Type of connection GF
Pipe connection 1 1/2
Pressure stage PN 10
Port-to-port length 6 1/2 in


Liquid

Pumped liquid Water
Liquid temperature range 35.6 .. 230 °F
Selected liquid temperature 140 °F
Density 61.35 lb/ft³


Electrical Data

Power input - P1 5 .. 45 W
Main frequency 60 Hz
Rated voltage 1 x 115 V
Maximum current consumption 0.1 .. 0.65 A
Enclosure class (IEC 34-5) IP42
Insulation class (IEC 85) F
Motor protection NONE
Thermal protec ELEC


Controls

Pos term box

6H

 

Others

Net weight 6.91 lb
Gross weight 7.53 lb
Shipping volume 271 ft³
Sales region USA
Country of origin US
Custom tariff no. 8413.70.00.21
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 85616235215

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4.0 ★★★★★
Based on 129 reviews
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Product Reviews
E
Verified Purchase
Eden Rose Bowling
Alexandria, US
★★★★★ 4
Great product but choose a size or two up
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Nice quality toy for long lasting and engaging play! One star docked for the sizing—I don't usually expect to need an xl anything for my 45lb border collie but he cant even fit his canine teeth into the large size to ease the jerky reward out in "hard" position but "easy" position he doesn't even tough the toy just grabs the jerky. Got an XL and it has been great for the jerky both easy and hard positioning. The larges I keep around for liquidy and frozen treats to keep the mess contained and they work very well for that.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2025
D
Verified Purchase
Dog Lover
San Leandro, US
★★★★★ 5
Truly for Aggressive Chewers
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Excellent product for aggressive chewers. The black Kong doesn't last forever BUT it is the most reliable toy I've used with my 60# pitt mix. I've returned so many toys that were advertised as for this girl's level of enthusiasm that I no longer buy anything else.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
Michael Steinmeyer
Battle Creek, US
★★★★★ 5
Great toy
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Solid toy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
L
Verified Purchase
Lazychick
Boise, US
★★★★★ 5
Great for Excessive Chewers and Eaters
Size: Large (Pack of 1), Product Packaging: Standard Packaging
I decided to get the Kong Extreme toy for my then 9-year-old dog in Sept. 2010, after her older sister passed away a few days before. I figured we both could have used the distraction. I learned ages ago that most toys couldn't hold up against my two Australian Cattle Dogs, since they didn't just happily gnaw on things, they'd try to eat it. In fact, they tried to eat a number of things, from fabrics to meticulously eating the lining off tennis balls and soft balls. Nothing was safe, especially against the youngest, who has some OCD issues. I'd be lucky to see a tough toy last a day, much less a month. Like the rest, I didn't think this toy would stand a chance, but it's still holding up well almost a year later. My dog isn't a strong chewer, like a doberman or pit, but very meticulous. She and her sister would go at something for hours if you let them, until nothing was left. Because of this, I also need to choose soft toys, rather than something hard, because she'll wear her teeth down if you let her. Fortunately, this manages to stand up to her obsessive chewing, but it also doesn't wear the teeth down, which I love. I'm thinking of getting a new one, even though the current could probably last another few months. I'm just now seeing some wear along the seams, despite her every effort to conquer and destroy it. I'm mainly getting it just to be on the safe side, so that I don't risk it falling apart while I'm not watching her, and just for the sake of cleanliness. These are extremely durable and easy to clean. They do have a strong odor when you first open them up, but it fades relatively quickly. I let ours soak it in hot/vinegar water for a while, then rinsed it well and left it out in the sun for a few hours. Seemed to help a little. They can also be loud when dogs chew on them, which can be annoying if you're trying to watch TV, but I find it well worth it, even if my partner doesn't agree during football time. I love the fact that these toys bounce unpredictably, although I would be careful around furniture if you plan to bounce it off the floor or toss it. I got into the habit of using it down our long hallway, referring to it as Dog Bowling, which she loves. She also didn't need food as incentive to get into it (just me playing with it and making it out to be a big deal), which is great, since that just means less cleaning and less weight gain in my book, although I do put treats in it now and then, if my partner and I are leaving the house and plan to be gone awhile. My dog's around around 30 lbs. and is medium sized, but has had no trouble tackling the larger-sized version, which was the only size available through Amazon at the time. I may get the medium-sized toy soon, just because she's reaching 10 and she'll go at it for ages. This is a great toy for obsessive chewers in particular, and I highly recommend it to dog lovers. I just wish we'd found out about them sooner! I'm also happy to report that she has stopped chewing on random things), like blankets and clothing, as much as she used to. If she does start up, it's because she can't find her Kong. I may also get the bone version and will review on that if I do.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 28, 2011
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Great buy
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Definitely recommend. My new rescue has chewed though I can’t even tell you how many “indestructible” toys in under 10 minutes. Not this! We’ve had it a few days and she loves it. Hasn’t chewed through it at all and it literally keeps her busy for an hour at the minimum. Would buy again. Great quality for the price and made to last. Perfect for aggressive chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026

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