Bypass valve · IPW Industries

IPW Industries 43644 Bypass Valve

Bypass valve

Updated October 2026

Quick verdict

A practical bypass valve for keeping an older softener running.

Strength
Fits Fleck 5810 and 5812 base models, ensurin.
Trade-off
Match the old part's number before ordering.
Right buyer
Keeping an older softener running.
Dimensions (seller)
5 x 4 x 4 inches
Product weight
12 ounces
Prices change often; the button shows today's price.

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What it does for your water

The IPW Industries 43644 Bypass Valve is a bypass valve whose listing says it fits Fleck 5810 and 5812 base models, ensuring a seamless integration.

The bypass is the switch between softened and unsoftened water for the whole house; replace it when it leaks or sticks.

Other listed details: model 43644.

The listing gives dimensions of 5 x 4 x 4 inches and a shipping weight of 12 ounces.

Is it the right unit for your house?

Choose it when

  • Keeping an older softener running
  • Matching a part listed in the manual

Pass on it when

  • Unlisted softener brands

Where it wins and where it loses

Wins

  • Fits Fleck 5810 and 5812 base models, ensurin

Loses

  • Match the old part's number before ordering

Limits to know about

  • Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.

Maker's figures

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model number43644Retailer
Product weight12 ouncesRetailer
Dimensions (seller)5 x 4 x 4 inchesRetailer
FitsFleck 5810 and 5812 base models, ensuring a seamless integrationRetailer

Units to weigh against it

Other brine tanks and softener parts in the catalog

Every brine tanks and softener parts on one grid · All IPW Industries units we cover

Final verdict

A practical bypass valve for keeping an older softener running.

Where to buy

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

What is the IPW Industries 43644 Bypass Valve for?
The IPW Industries 43644 Bypass Valve is a bypass valve whose listing says it fits Fleck 5810 and 5812 base models, ensuring a seamless integration.