Pentair 522623Z IntelliChem External Low Flow Switch Kit, 3 ft Cable — Genuine OEM
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The Pentair 522623Z External Low Flow Switch Kit is the genuine OEM flow switch for the IntelliChem® chemical controller, supplied with a 3 ft cable. It tells the IntelliChem whether water is actually moving through the system, so pH and ORP monitoring and chemical dosing only happen when there's proper flow — a critical safety interlock that prevents dosing into stagnant water.
Key Features
- Genuine Pentair OEM: Correct switch and signal for the IntelliChem controller.
- Flow-proving safety: Confirms water is circulating before the system monitors chemistry or doses chemicals.
- External inline design: Installs in the sample/return line feeding the IntelliChem.
- 3 ft cable included: Ready to connect to the IntelliChem flow-switch input.
- Prevents false readings: Stops pH/ORP sensing and dosing when there's no flow, protecting your pool and equipment.
- Direct replacement: Swaps in for a failed or intermittent IntelliChem flow switch.
Specifications
- Part Number: 522623Z
- Type: External low flow switch kit
- Cable Length: 3 ft
- Fits: Pentair IntelliChem chemical controllers
- Function: Flow-proving switch (enables monitoring/dosing only when water is flowing)
- Brand: Pentair — genuine OEM
Frequently Asked Questions
What does the Pentair 522623Z do?
It's the flow switch for the IntelliChem controller. It confirms water is flowing through the system so the IntelliChem only monitors chemistry and doses acid/chlorine when there's actual circulation — never into stagnant water.
Which system does it work with?
Pentair IntelliChem chemical controllers. It connects to the IntelliChem board's flow-switch input via the included 3 ft cable.
How do I know my flow switch has failed?
Common signs are a persistent "no flow" condition on the IntelliChem even when the pump is clearly running, or the controller failing to enter dosing mode. A failed or fouled switch is a frequent cause.
Is this the same as an IntelliChlor flow switch?
No — this is specifically the IntelliChem flow switch. The IntelliChlor salt cell uses a different flow-sensing arrangement. Match the part to the IntelliChem controller.
Does it include the cable?
Yes — a 3 ft cable is included, ready to connect to the IntelliChem.
Should a professional install it?
Plumbing into the sample line and wiring to the controller is best done by a qualified pool professional. Disconnect power to the IntelliChem before servicing, and confirm proper flow direction on installation.