Black FridayDealsBuying guidesBrandsStoresTermsPrivacydeal.ai apps

© Deal.ai Inc.

Deal.ai
Dayton
Dayton 401-45B Outlet Check Valve Kit

Dayton 401-45B Outlet Check Valve Kit

Best price now

$16.39at ZoroObserved at 4:56 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Zoro

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Our take on the Dayton 401-45B Outlet Check Valve Kit

The Dayton 401-45B is a replacement outlet check valve kit for Dayton sump pumps, listed as compatible with Grainger part 4ZD01J. It is a small service part, not a complete pump, so it only makes sense if you already own the matching pump and the check valve has failed. At $16.39 at Zoro as of November 4, 2026, it is a low-cost repair compared with replacing a whole pump, and only two stores list it new, so stock can be thin.

Best forOwners of the Dayton pump that takes Grainger part 4ZD01JFixing a sump pump that runs but won't hold water backCheap repair instead of a new pump
Pros
  • Low price at $16.39 at Zoro as of November 4, 2026
  • Direct replacement for a specific Dayton pump model
  • Small, light kit that is easy to ship and store
  • Restores the check valve function without buying a new pump
Cons
  • Fits only the listed compatible pump, not universal
  • Only two stores list it new, so availability is limited
  • No installation hardware or instructions described
  • Check valves are a wear part and may fail again

Dayton 401-45B Outlet Check Valve Kit prices at every store

  • ZoroNew

    In stock

    $16.39Observed at 4:56 PM
    Visit store
  • WalmartNew

    In stockSold by Diamond Home USA, Inc.

    $29.98Observed at 4:56 PM
    Visit store

Also available at

  • Grainger Industrial SupplyCheck price at Grainger Industrial Supply

Dayton 401-45B Outlet Check Valve Kit price history

Lowest price we've seen: $12.78 on Nov 4 at Grainger Industrial Supply. Tracked across 3 stores since Nov 4.

Specifications

Type
Outlet Check Valve Kit
Valve Type
Outlet Check Valve
Depth
7.80 Inches
Height
1.00 Inches
Width
11.08 Inches
Compatible With
Grainger Part Number 4ZD01J
Included Components
Outlet Check Valve Kit
Typical Users
UNISEX, ADULT

Questions and answers

Is this the whole pump?
No. It is only the outlet check valve kit for a Dayton pump. You need the matching pump, listed as compatible with Grainger part 4ZD01J, already installed.
Will it fit my sump pump?
Only if your pump is the model that takes Grainger part 4ZD01J. Check your pump's model or parts list before ordering, since the kit is not universal.
Is $16.39 a good price?
It is the best new price among the two stores listing it as of November 4, 2026. With so few sellers, compare against the other listing and factor in shipping.
What is in the box?
The listing describes the contents only as the outlet check valve kit. Expect the valve assembly itself; check with the seller if you need gaskets or fasteners.
When is it cheapest?
There is little price competition on this part, so discounts are unlikely. Buy when you need the repair rather than waiting for a sale.
Where is the Dayton 401-45B Outlet Check Valve Kit cheapest?
At Zoro, for $16.39, as of our latest check.
Where can I buy the Dayton 401-45B Outlet Check Valve Kit?
3 stores we checked sell it, including Zoro, Walmart, Grainger Industrial Supply.