Hayward W3PRO25-10 ORP sensor for CAT controllersHayward ORP Sensor with Cable, W3PRO25-10 In stock$42900 Web Price
Hayward W3PRO25-10 ORP sensor for CAT controllers
Shop all Hayward

Hayward ORP Sensor with Cable, W3PRO25-10

Ask a questionMPN W3PRO25-10
$42900 Web Price Some manufacturers don’t allow us to publicly display their best prices online. When you request an Unadvertised Deal, you’re asking us to unlock a special offer that isn’t shown on the site.
Get your unadvertised price ›
FREE Delivery
In stock

30 day returns · Easy, with prepaid labels provided

Quick overview

  • Factory original The Hayward replacement part, not a generic probe.
  • For CAT controllers Listed for the Hayward CAT controller range.
  • Replaces PRO25-10 The current number for the sensor formerly sold as PRO25-10.
  • ORP measurement Reads oxidation reduction potential, the value the controller uses to judge sanitizer activity.
  • 2 year sensor Hayward lists it as a 2 year sensor.
  • Cable length is listed two ways The product name gives 10 inch and the product detail gives a 10 foot cable, so confirm the length you need before ordering.
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 ORP Sensor with Cable, W3PRO25-10, SKU HAY-451-1000. We will include it with your message.

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

Frequently bought together

Current item Hayward ORP Sensor with Cable, W3PRO25-10
Hayward

ORP Sensor with Cable, W3PRO25-10

$42900 Web Price Some manufacturers don’t allow us to publicly display their best prices online. When you request an Unadvertised Deal, you’re asking us to unlock a special offer that isn’t shown on the site.
Get your unadvertised price ›
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
Gecko Aeware IN.K450 7-Button Control Panel with Overlay, 0607-005012
Gecko Alliance

Gecko Aeware IN.K450 7-Button Control Panel with Overlay, 0607-005012

$16799
Pentair Genuine OEM Replacement UOC Motherboard, 4 Aux, EasyTouch, 520659
Pentair

Genuine OEM Replacement UOC Motherboard, 4 Aux, EasyTouch, 520659

$58399
Pentair IntelliChem Container Tank-Mount Pump Upgrade Kit, 522474
Pentair

IntelliChem Container Tank-Mount Pump Upgrade Kit, 522474

$26199
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$22899 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$23799 Pentair 521378 IntelliChem 4 gallon acid container Pentair IntelliChem Acid Container for Chemical Controller, 4 Gallon, 521378$46699
IPS Controllers FC100G Blue/Clear complete flow cell with flow switch IPS Controllers Blue/Clear Complete Flow Cell with Flow Switch, FC100G$24500 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$26999 Hayward GLX-PROBE-ORP Goldline Sense and Dispense ORP probe Hayward Goldline Sense and Dispense ORP Probe, GLX-PROBE-ORP$48699 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$39599 Hayward CAX-20203 rotary flow sensor for CAT 1000 monitors Hayward CAX-20203 Flow Monitoring Rotary Sensor for Select Cat 1000 Monitors$42899 Pentair 521465Z IntelliChem chemical controller enclosure top Pentair IntelliChem Enclosure Top, 521465Z$30799 Pentair 522712 IntellipH chemical container tank Pentair IntellipH Chemical Container Tank, 522712$54199 Pentair 744000260 pH sensor for Acu-Trol AK110 and AK600 chemical controllers Pentair 744000260 pH Sensor for AK110 and AK600 Chemical Controllers$37899 IPS Controllers SXORPG gold tip ORP sensor for salt pools IPS Controllers ORP Sensor Gold Tip for Salt Pools, SXORPG$31299 Hayward W3PRO15-10 pH sensor with 10 ft cable for CAT controllers Hayward pH Sensor with 10 ft Cable, W3PRO15-10$42900 Web Price

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 W3PRO25-10 is the factory original ORP sensor for Hayward CAT controllers. It replaces the part previously sold as PRO25-10, and Hayward lists it as a 2 year sensor.

What it measures

ORP is oxidation reduction potential, and it is the reading a chemical controller uses to judge how hard the sanitizer in the water is working. The controller does not know what the chlorine level is; it knows what the probe tells it. When the probe drifts, every dosing decision downstream of it is made on bad information.

When to change it

A sensor that will not hold a calibration, or that reads steadily against what a test kit shows, is worn out. Cleaning the tip is worth trying first, but a probe past its service life will not come back.

One thing to check before ordering

The cable length appears two ways in the source data, as 10 inch in the product name and as a 10 foot cable in the product detail. If the distance from the controller to the sensor mount matters on your installation, confirm the length with us first.

Specifications
Brand Hayward
Manufacturer part number W3PRO25-10
UPC 0610377389846
Type ORP sensor
Replaces PRO25-10
Sensor life 2 year sensor
Cable length Listed as 10 inch in the product name and as a 10 foot cable in the product detail
Fits Hayward CAT controllers
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.

How long is the cable?
The source lists it two ways. The product name says 10 inch and the product detail says a 10 foot cable. Confirm the length with us before ordering if the run matters.
Which controllers does it work with?
It is listed for Hayward CAT controllers.
Is this the same as PRO25-10?
Yes. W3PRO25-10 is the current Hayward number and it replaces PRO25-10.
Why would I replace an ORP sensor?
Probes drift as they age. If readings wander after cleaning and calibration, or the controller doses against what the test kit shows, the sensor has reached the end of its life. Hayward rates it as a 2 year sensor.
Ask your own question