Hayward CAX-20203 rotary flow sensor for CAT 1000 monitorsHayward CAX-20203 Flow Monitoring Rotary Sensor for Select Cat 1000 Monitors In stock$41599
Hayward CAX-20203 rotary flow sensor for CAT 1000 monitors
Shop all Hayward

Hayward CAX-20203 Flow Monitoring Rotary Sensor for Select Cat 1000 Monitors

Ask a questionMPN CAX-20203
$41599
FREE Delivery
In stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

Quick overview

  • Genuine Hayward Factory part CAX-20203.
  • Flow monitoring The rotary style flow sensor the controller uses to watch water movement.
  • For CAT 1000 monitors Listed as the replacement sensor for select Hayward CAT 1000 monitors.
  • CAT controller family Hayward also describes it as the rotary flow sensor for CAT controllers.
  • One per carton Supplied as a single sensor, 1 per carton.
  • Sensor only The sensor by itself, not a complete controller or monitor.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Hayward CAX-20203 Flow Monitoring Rotary Sensor for Select Cat 1000 Monitors, SKU HAY-451-2020. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Hayward CAX-20203 Flow Monitoring Rotary Sensor for Select Cat 1000 Monitors
Hayward

CAX-20203 Flow Monitoring Rotary Sensor for Select Cat 1000 Monitors

$41599
Jandy Valve Actuator JVA 24V, 4424
Jandy

Valve Actuator JVA 24V, 4424

$23399
Hayward Main PCB Replacement for Goldline ProLogic Automation and Chlorination After 10/2008, GLX-PCB-PRO
Hayward

Main PCB Replacement for Goldline ProLogic Automation and Chlorination After 10/2008, GLX-PCB-PRO

$1,07599
Pentair Genuine OEM Load Center IntelliChlor SCG Surge Board PCBA, 521218
Pentair

Genuine OEM Load Center IntelliChlor SCG Surge Board PCBA, 521218

$31299
Pentair IntelliChem Container Tank-Mount Pump Upgrade Kit, 522474
Pentair

IntelliChem Container Tank-Mount Pump Upgrade Kit, 522474

$26199
Intermatic 24-Hour 208-277V Mechanical Time Switch, DPST, Mechanism Only, T104M
Intermatic

24-Hour 208-277V Mechanical Time Switch, DPST, Mechanism Only, T104M

$9299
Hayward Digital Control Interface Assembly, SPX3200LCD
Hayward

Digital Control Interface Assembly, SPX3200LCD

$44599
Subtotal

Similar products

Other products people compare with this one.

Pentair 754000340 clear flow cell jelly jar for the AK1200 IntelliChem chemical controller Pentair Clear Flow Cell Jelly Jar for AK1200 IntelliChem Chemical Controller, 754000340$30299 Pentair 522187Z IntelliChem ORP sensor without wire Pentair IntelliChem ORP Sensor, without Wire, 522187Z$22099 Pentair 522472 acid tank with tank mounted pump for IntelliChem Pentair Acid Tank with Tank Mounted Pump, 522472$53699 Hayward GLX-PROBE-PH Sense and Dispense pH probe Hayward Sense and Dispense pH Probe, GLX-PROBE-PH$45699 Aquasol S010 ORP electrode with BNC connector and 10 ft. cable Aquasol ORP Electrode Cable with BNC Connector, S010$21599 Pentair 521397 four gallon chlorine container for IntelliChem chemical controller Pentair Chlorine Container for IntelliChem Chemical Controller, 4 Gal, 521397$45899 Rola-Chem 550135 heavy duty pH probe with 8 ft lead Rola-Chem 8 ft Heavy Duty pH Probe, 550135$22199 Pentair 522711 IntellipH controller unit Pentair IntellipH Controller Unit, 522711$37699 Rola-Chem 550136 heavy duty ORP probe with 8 ft lead Rola-Chem ORP Probe Heavy Duty, 550136$23099 IPS Controllers FC100G Blue/Clear complete flow cell with flow switch IPS Controllers Blue/Clear Complete Flow Cell with Flow Switch, FC100G$24500
Pentair 521378 IntelliChem 4 gallon acid container Pentair IntelliChem Acid Container for Chemical Controller, 4 Gallon, 521378$45299 Hayward GLX-SD-FLOW pH and ORP Sense and Dispense water cell with valve Hayward pH/ORP Sense and Dispense Water Cell with Valve, GLX-SD-FLOW$26199 Hayward GLX-PROBE-ORP Goldline Sense and Dispense ORP probe Hayward Goldline Sense and Dispense ORP Probe, GLX-PROBE-ORP$47199 Pentair 744000330 red ORP sensor for Acu-Trol AK110 and AK600 controllers Pentair Red ORP Sensor for Acu-Trol AK110 and AK600 Commercial Chemical Controller, 744000330$43399 Pentair 521465Z IntelliChem chemical controller enclosure top Pentair IntelliChem Enclosure Top, 521465Z$29799 Pentair 522712 IntellipH chemical container tank Pentair IntellipH Chemical Container Tank, 522712$52599 Pentair 744000260 pH sensor for Acu-Trol AK110 and AK600 chemical controllers Pentair 744000260 pH Sensor for AK110 and AK600 Chemical Controllers$36799 Hayward W3PRO25-10 ORP sensor for CAT controllers Hayward ORP Sensor with Cable, W3PRO25-10$42900 Web Price Hayward W3PRO25-2 Pro Series ORP sensor with 24 inch cable Hayward Pro Series ORP Sensor with 24 in. Cable, W3PRO25-2$42900 Web Price IPS Controllers SXORPG gold tip ORP sensor for salt pools IPS Controllers ORP Sensor Gold Tip for Salt Pools, SXORPG$30299

From Hayward

This industry builds more than pools. We build moments. Hayward

Hayward equipment

Hayward Super Pump 1 HP Max Rated 115/230V, W3SP2607X10 Hayward AquaRite Salt System Complete, 40,000 Gallon Pools, W3AQR15 Hayward TracVac Suction Wall Climbing Pool Cleaner for In-ground Pools up to 40 ft, W3HSCTRACCU Hayward Pro-Grid 60 Sqft DE Pool Filter, Valve Not Included, W3DE6020
Shop Hayward equipment

Genuine Hayward parts

Hayward TurboCell T-15 Salt Cell for Inground Pools up to 40,000 Gallons, W3T-CELL-15 Hayward Genuine OEM SP1082 Skimmer Basket, SPX1082CA Hayward Genuine OEM Vari-Flo XL Filter Valve Key Cover Handle Assembly, SPX0714BA Hayward H-Series Bezel & Keypad Assembly, FDXLBKP1930
Shop Hayward parts
Pool cleaners: Hayward TracVac and PoolCleaner suction cleaners lined up on a pool deckPool automation: the Hayward app on a phone held up in front of an infinity poolPool water features: two bubblers in a tiled spa, a woman relaxing on a lounger behind
Hayward makes pumps, filters, heaters, salt systems, cleaners, lighting and automation for residential pools.Shop all Hayward

Product details

The Hayward CAX-20203 is the flow monitoring rotary sensor for select Hayward CAT 1000 monitors. It is supplied one per carton and is the genuine Hayward part.

Why flow monitoring matters

A chemistry controller only means something while water is moving past its probes. The rotary flow sensor is how the controller knows that is happening. When the sensor stops reporting, the controller loses the one signal that tells it whether its readings represent the pool at all.

Check the model

Hayward lists this sensor for select CAT 1000 monitors, and also describes it more broadly as the rotary flow sensor for CAT controllers. Confirm the model on your monitor before ordering rather than going by appearance.

Specifications
Brand Hayward
Manufacturer part number CAX-20203
UPC 761418012749
Type Rotary flow sensor
Function Flow monitoring
Fits Select Hayward CAT 1000 monitors and CAT controllers
Packaging 1 per carton
Shipping weight 0.6 lb
Ships Parcel

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

Customer reviews

More from Hayward

Hayward SP0714T Vari-Flo XL 1.5 in. top mount multiport valve kit, front view Hayward SP0714T Vari-Flo XL 1.5 in. Top Mount Multiport Valve Kit$15899 Hayward CL200EF in-line automatic pool chlorinator, 9 lb tablet feeder Hayward CL200EF In-Line Automatic Pool Chlorinator, 9 lb Chemical Feeder$12499 Hayward GLX-CTL-RITE AquaRite salt system power center, control box only Hayward AquaRite Salt System Power Center (Requires Salt Cell), GLX-CTL-RITE$1,37799 Hayward SPX0714BA Vari-Flo XL valve key cover handle assembly for SP0714T Hayward Genuine OEM Vari-Flo XL Filter Valve Key Cover Handle Assembly, SPX0714BA$14799 Hayward FDXLHXA1250 heat exchanger assembly for the H250FD Universal H-Series low NOx heater Hayward Heat Exchanger Assembly for H250FD, FDXLHXA1250$1,28299 Hayward TurboCell T-15 W3T-CELL-15 salt cell, replacement for AquaRite systems Hayward TurboCell T-15 Salt Cell for Inground Pools up to 40,000 Gallons, W3T-CELL-15$1,09900 Web Price Paralevel Startup Kit, part number 004-760-2921-00 Hayward Paralevel Startup Kit, 004-760-2921-00$5799 Hayward GLX-PCB-PRO main PCB for Goldline ProLogic and AquaPlus controls Hayward Main PCB Replacement for Goldline ProLogic Automation and Chlorination After 10/2008, GLX-PCB-PRO$1,07599 Hayward SP10841 Auto-Skim skimmer for vinyl and fiberglass pools, white with square lid Hayward Auto-Skim Skimmer for Vinyl/Fiberglass Pools, 1.5" FPT, Square Lid, White, SP10841$19299 Hayward SPX0714L cover o-ring for SP0714T Vari-Flo XL valve Hayward Cover O-Ring for SP0714T Vari-Flo XL Valve, SPX0714L$1799
Paramount 005422901500 two lamp UV kit with boot and o-ring for HydraPure and Ultra UV2 sanitizers Paramount 2-Lamp Kit with Boot and O-Ring for HydraPure and Ultra UV2 Sanitizers, 005422901500$26899 Hayward W3T-CELL-9 TurboCell T-9 salt cell with 15 ft cord Hayward TurboCell T-9 Salt Cell for Inground Pools up to 25,000 Gallons, Genuine AquaRite Replacement, W3T-CELL-9$89900 Web Price Hayward SP0710X62 Vari-Flo 1.5 in. side mount multiport valve for Pro Series sand filters Hayward Vari-Flo 1.5" Side Mount Multiport Valve for Sand Filters, SP0710X62$18899 Hayward SPX1082CA genuine OEM skimmer basket, 7 in. top diameter Hayward Genuine OEM SP1082 Skimmer Basket, SPX1082CA$2399 Hayward SPX1091Z7 1-1/2 in. combo hose adapter, 2 pack Hayward 1-1/2" Combo Hose Adapter for Filters, Pumps, Skimmers and Chlorine Feeders (2 Pack), SPX1091Z7$899 Hayward SPX0740BA key cover and handle assembly for SP740DE multiport valve Hayward OEM Key Cover and Handle Assembly for SP740DE, SPX0740BA$19799 Hayward CX200XRE 200 sq. ft. replacement filter cartridge for the SwimClear C200S Hayward Genuine OEM SwimClear C200S Filter Cartridge, CX200XRE$20299 Hayward HLXPROUPG Pro Logic Retrofit Kit, OmniPL Hayward Pro Logic Retrofit Kit, OmniPL, HLXPROUPG$1,99900 Web Price Hayward SP071620T 2 in. top mount backwash valve with clamp for Pro Series S310T and S310T2 Hayward 2" Top Mount Backwash Valve with Clamp, Fits Pro Series Sand Filters S310T / S310T2, SP071620T$25399 Hayward FDXLGSV0003 natural gas valve kit for Universal H-Series FD heaters Hayward Natural Gas Valve Kit, FD Series, FDXLGSV0003$41899

Questions and answers

What people ask about this product, answered by our pool techs.

Which controllers does this sensor fit?
Select Hayward CAT 1000 monitors. Hayward also lists it as the rotary flow sensor for CAT controllers, so confirm the model before ordering.
How many sensors come in a carton?
One. It is supplied 1 per carton.
Is it a genuine Hayward part?
Yes. It is Hayward part number CAX-20203.
What does a flow sensor do on a chemistry controller?
It reports water flow to the controller. If the sensor fails, the controller cannot confirm that water is actually moving past the probes.
Ask your own question