
Hayward CAX-20203 Flow Monitoring Rotary Sensor for CAT 1000 Controller Monitors
Description
Hayward CAX-20203 Flow Monitoring Rotary Sensor – Replacement for CAT 1000 Controller Monitors
The Hayward CAX-20203 is a genuine OEM flow monitoring rotary sensor designed for use with select Hayward CAT 1000 automated controller monitor models. This sensor ensures accurate flow rate monitoring to support proper chemical automation and system performance.
Product Features:
OEM rotary flow sensor replacement
Designed for Hayward CAT 1000 chemical automation monitors
Ensures accurate flow monitoring for reliable water quality control
Battery powered (9V DC) with touch control compatibility
Easy to install and built for long-term durability
Compatibility:
Fits the following Hayward CAT 1000 models:
CAT-1000-CO2, CAT-1000-CO2-UL
CAT-1000-ORP, CAT-1000-ORP-UL
CAT-1000-PH, CAT-1000-PH-UL
CAT-1000-PTC, CAT-1000-PTC-UL
CAT-1000ORPPTC, CAT-1000ORPPTCUL
Specifications:
Brand: Hayward
Part Number: CAX-20203
Color: White
Power Source: Battery (9V DC)
Control Method: Touch
Item Weight: 0.2 lbs
Maintain accurate system performance and safe water conditions with this essential replacement rotary sensor from Hayward.
Shipping & Returns
Shipping: We offer free standard shipping on all orders within the contiguous United States (lower 48). We do not currently ship to Alaska, Hawaii, or Puerto Rico. Any other restrictions will be shown at checkout. We do not currently ship internationally. Orders ship within 1 to 2 business days, and delivery typically takes 4 to 6 business days after shipping, for a total of about 5 to 8 business days from your order date.
Tracking information is emailed once your order ships. We do not currently offer international shipping. See our full Shipping Policy for full details.
Returns: Unused items in their original packaging may be returned within 30 days of delivery. To start a return, request a Return Merchandise Authorization (RMA) by emailing support@nationalpoolsupply.com or calling +1 978-222-0628 with your order number and the reason for the return (include photos if the item is defective, damaged, or incorrect). Once your RMA is approved, ship the item with your RMA number to: DHB Enterprises LLC / National Pool Supply, 30 Log Bridge Rd, Building 300, Unit 301, Middleton, MA 01949. Change-of-mind returns: you pay return shipping, and a 15% restocking fee applies; original shipping costs are not refunded. Defective, damaged, or incorrect items reported within 30 days of delivery are returned at no cost to you with a prepaid label, and no restocking fee applies. See our full Refund and Returns Policy for full details.
Warranty
Manufacturer Warranty:
This product carries the manufacturer's warranty, where applicable. Warranty terms, coverage, and exclusions are set by the manufacturer. Warranty claims are filed directly with the manufacturer; we do not process warranty claims or offer a separate warranty of our own. If you need the manufacturer's contact details, contact us and we will share them. See our Warranty page for details.

Pool and Spa Parts & Supplies
Why Choose National Pool Supply?
We're dedicated to offering pool and spa products from leading brands. At National Pool Supply, your pool’s care is our priority, and we’re here to make your experience effortless.




