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.