Pentair Flow Switch with Connector | BioShield UV System | 523458
Pentair Pool Products and Parts

Pentair Flow Switch with Connector | BioShield UV System | 523458

$141.99
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SKU:
523458

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About This Item

The Pentair Flow Switch with Connector (523458) is the OEM replacement flow switch for the Pentair BioShield UV System series, sold as a single unit complete with its wiring connector.

The flow switch monitors water movement through the BioShield UV system and signals the unit to activate only when flow is detected. This protects the UV lamp and chamber from operating dry — a condition that can cause premature lamp failure or housing damage. If your BioShield system is failing to activate, shutting off unexpectedly, or displaying a flow fault, the flow switch is a primary diagnostic component to inspect and replace.

Specifications

Pentair Part Number 523458
Part Name Flow Switch only (with connector)
Quantity Included Each

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair BioShield UV System 50 Watt 522635 Flow Switch only (with connector)
Pentair BioShield UV System 80 Watt 522636 Flow Switch only (with connector)
Pentair BioShield UV System 120 Watt 522637 Flow Switch only (with connector)
Pentair BioShield UV System 150 Watt 522638 Flow Switch only (with connector)
Pentair BioShield UV System 150 Watt (Alt) 522945 Flow Switch only (with connector)

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

Before ordering, locate the part number on your existing flow switch body or in your BioShield unit's installation manual and confirm it matches 523458. The flow switch connector is included with this part — confirm your existing harness connector style matches before installation. Have a qualified pool technician service this component; the BioShield UV system involves mains-voltage electrical connections that must not be disturbed without proper precautions.

CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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