Grundfos Circulation Pump 1" Barb 120V 31842

Grundfos Circulation Pump 1" Barb 120V 31842

Grundfos Circulation Pump 1" Barb 120V 31842

Regular price $134.95
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Replacement Grundfos 120V Circulating Pump is designed for continuous 24 hour circulation for hot tubs, waterfalls and water features. also includes the Spa Foot Mounting Kit (#96806111) at no additional charge. This base allows for rotational orientation of the output barb in 4 different positions to best suit your plumbing needs.

  • 1" barb fitting
  • Mounting base kit included - FREE

Product notes: 1/15 HP, 0.74 amps, 60 Hz., output 12-18 GPM. For 3/4" tubing, use BX9442 adapters. Installation manual included. 2-year manufacturer's warranty.


Voltage: 110-120V

Amperage: .74A

Gallons Per Minute: 12-18 GPM

Plumbing: 1” barbed

Wet End Discharge Orientation: Top (can easily be rotated)

Overall Length: 5.5”

Other Reference: 021001-19, 1-00-0046, 1-00-0184, 10-0134, 1030005, 15-178-6291, 31842, 34-430-2050, 59896132, 59896291, 59896352, 632514098909, 70813 (Watkins), 92007, 9333-01, GG92007, PU602393, PUGR1543115S, PMPUP1538SPA115, UP15-38SPA

Warranty: 24 Month Limited Warranty

Customer Reviews

Based on 27 reviews
Steve U.
circulation pump

this pump is guaranteed two years, runs constantly

Ted O.


sylvain t.
Very good replacement pump

Easy to install , replace my original circulation pump on Calspas. My original pump was a Laing E10 .

Hottub p.
Great product no issues

Received the pump a couple of days after I ordered it. It is working great. Installed very easy.

Ray F.
Yes I would buy this again just wish it would last longer th

One big issue is that the pump did not come with new o-rings on the input and output tubes,had to run to the hardware store to match up new o-rings which added another step to the process,makes no sense not to include them on the pump which have to have in order to install the pump,disappointing,however spa depot does a good job at what they do,thanks for listening