Pentair 520588 IntelliChlor Pass-Through Dummy Bypass Cell for Winterization & Start-Up — Genuine OEM
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The Pentair 520588 IntelliChlor Pass-Through "Dummy" Bypass Cell is a spacer cell that takes the place of your IntelliChlor salt cell during winterization, start-up, or chemical treatments. It lets water flow normally through your plumbing while your real salt cell is safely removed — protecting your investment from cold weather and harsh start-up chemicals, and extending its service life.
Key Features
- Protects your salt cell: Swap it in over winter or during start-up so the expensive IntelliChlor cell isn't exposed to freezing temps or concentrated chemicals.
- Maintains water flow: Pass-through design keeps your circulation system running normally with no salt cell installed.
- Genuine Pentair fit: Correct thread and dimensions for a leak-free connection (aftermarket copies are known to fit poorly).
- Extends cell life: Reduces unnecessary wear on your salt cell during the off-season.
Compatibility
Fits Pentair IntelliChlor systems using the IC15, IC20, IC40, and IC60 cells (and the Plus-series cells that share the same connection).
Specifications
- Part Number: 520588
- Type: Pass-through / dummy / bypass spacer cell
- Dimensions: 15.5" L x 3.5" W x 3.5" D
- Brand: Pentair — genuine OEM product
Frequently Asked Questions
What does a dummy cell actually do?
It replaces your IntelliChlor salt cell when the cell isn't in use. It doesn't generate chlorine — it simply keeps water flowing through the plumbing so you can remove and protect the real cell during winter, start-up, or chemical treatments.
Which IntelliChlor cells is the 520588 compatible with?
It works with Pentair IntelliChlor IC15, IC20, IC40, and IC60 systems.
Do I really need the genuine Pentair version?
It's strongly recommended. Pentair's connection is a specific thread diameter, and users report aftermarket dummy cells with slightly different threads that won't seal properly and risk leaks or fitting damage.
Can I leave my salt cell installed over winter instead?
Some owners do, but swapping in a dummy cell protects the salt cell from freeze damage and start-up chemicals and helps it last longer — cheap insurance for an expensive component.
Frequently asked questions
How many gallons is this salt system rated for?
The gallon rating is part of the model designation and is listed in the specification section above. Sizing up is normal practice: a cell rated above your pool volume runs fewer hours to hold the same chlorine level and generally lasts longer than one running at its limit.
What is the part number for this salt cell?
Pentair lists this salt cell under part number 520588. Quote 520588 when you cross-reference against your equipment manual, an existing part, or a parts diagram, so you are comparing the same revision.
How long does a salt chlorinator cell last?
Cell life is measured in operating hours rather than calendar years, and most residential cells give several seasons of service. Life is shortened by high cyanuric acid, low water temperature operation, scale buildup on the plates, and running the cell at a high output percentage for long periods.
How do I confirm this fits my equipment?
Match the part number stamped on the component you are replacing, or look it up in the parts list for your Pentair equipment. If your model or serial number is not named on this page, send it to us before you order and we will confirm the fit.
Do I need a matching power supply or control unit?
A cell and its power centre are matched as a pair; a cell will not generate chlorine on a power supply it was not designed for. Check whether this listing is the cell only, the power supply only, or a complete system before ordering.
Is there a warranty on this salt cell?
It carries the standard Pentair manufacturer warranty. The terms are set by Pentair, and on some equipment the coverage only applies when a licensed professional performs the installation. Keep the receipt and packaging until you have confirmed correct operation.