Pentair 523506Z ChemCheck Clear Flow Jar Reservoir
Pentair 523506Z ChemCheck Clear Flow Jar Reservoir
The Pentair 523506Z is the clear reservoir, or flow jar, on a ChemCheck water testing system.
- OEM reservoir for Pentair ChemCheck EC-523476 and 523476 systems
- Clear body lets you see sample water and electrode condition at a glance
- Seats between the flow valves and the electrode housing
Why buy from Shasta?
Shasta Pool Supply stocks genuine Pentair ChemCheck parts for Phoenix-area pool owners and service pros. Orders over $150 ship free.
The reservoir is item 9 on Pentair's ChemCheck parts diagram, between the drain plug assembly and the o-ring.

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Key Features
- OEM reservoir for Pentair ChemCheck EC-523476 and 523476 systems
- Clear body for visual inspection of sample water
- Seats between the flow valves and electrode housing
Technical Specifications
- Manufacturer part number: 523506Z
- Compatibility: Pentair ChemCheck EC-523476, 523476
- Component: Reservoir (flow jar), item 9 on parts diagram
Specs
- Part Number: 523506Z
- Manufacturer: Pentair
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FAQ
Our expert staff answers customer's most asked questions.
Why is water leaking out of my backwash line during normal filtration?
This is the classic symptom of a failed plug and gasket assembly. When the rubber spokes of the integrated spider gasket warp, crack, or pull away from the plastic diverter over time, water slips underneath the seal and escapes directly out of the waste/backwash port. Replacing this assembly restores the watertight seal.
Do robotic pool cleaners operate effectively in salt water ?
Robotic pool cleaners work effectively in saltwater pools. The SharkVAC is one model that is designed with corrosion-resistant materials and advanced filtration systems that handle saltwater environments without damage.
To insure the life span of the product remove the robotic cleaner from the pool after each cycle.
How often should I test my pool water?
Regular testing, ideally once a week, ensures that chemical levels are within the recommended range. This practice ensures that your pool is always ready for enjoyment.
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