By Hayward Pool Products



Model # CL2002S

Warranty 1 Year

Alternate Part #'s 42-150-1003, HAYCL2002S

Product Description

The CL2002S Inline Chlorinator is designed to automatically feed chlorine to your inground pool by working with your existing pump and filter system.  Returning water to the pool flows through the chlorinator which is plumbed inline after the filter.


  • Holds 9 lbs of chlorine
  • Can be used with small or large slow-dissolve chlorine tablets or sticks
  • Dial control valve lets you adjust the rate of feed with 9 settings from "off" to "full"
  • Easy-Lok™ threaded cover for safe and convenient access to add tablets or sticks
  • Unique finger-release catch provides extra security
  • Includes mounting base
  • Simple installation for do-it-yourselfers.
  • 2 in. inlets and outlet ports for applications with 50 gpm to 90 gpm flow rates.
  • Socket connectors

Pipe Size: 2 in.
Dimensions: (W) 9 in. x (H) 14-3/4 in.
Weight: 5 lbs.

Flow Ratings: (GPM = Gallons Per Minute)
CL100 - Used with pumps with flow rating of 30-50 GPM
CL200 - Used with pumps with flow rating of 50-80 GPM
CL2002S - Used with pumps with flow rating of 50-90 GPM
CL110 - Used with pumps with flow rating of 30-50 GPM
CL220 - Used with pumps with flow rating of 50-90 GPM

Product Notes:

The CL2002S comes with socket connectors, not unions.  The manufacturer does not make unions for the 2" chlorinator.  It can be plumbed using the SP14982S union; this would connect to the 2" pipe, not the chlorinator itself.

Chemical feeders should always be installed after a pool heater.

CAUTION: Extreme care must be excerised when adding chemicals to your pool. Concentrated chemicals may react violently if they mix in the chemical feeder, causing a fire or explosion, which may result in PROPERTY DAMAGE, PERSONAL INJURY or DEATH.

CAUTION: Never use any petroleum based lubricants on cover O-Ring. Regular lubrication is necessary to allow for easy cover removal. Use non-petroleum based lubricants such as Jack's No. 327 lube or Ivory bar soap.

Click here for more Hayward Chlorinator

Product Specifications

Large Tab Capacity:
18 Tablets
Small Tablet Capacity:
9 Lbs.
Treatment Capacity:
5,000-36,000 gal.

?     Asked on 7/13/2006by Guest

Can I use granular, or must I use 3" tablets or stick?

A  Answered on 7/13/2006 by InyoPools Product Specialist Patrick P.

We recommend using tablets or sticks, and not to use granular with chlorinators.

?     Asked on 3/10/2007by Guest

Is there a feedback mechanism that tells the unit the chlorine balance in the pool? Is this a way for me to automate addition of clorine to keep it always at the correct level? Or, just another place to put the tab aside from the the drain basket?

A  Answered on 3/10/2007 by InyoPools Product Specialist Patrick P.

There is a dial on this unit which has a setting from 1-10 If you set the dial on 1 it will be letting the least amount of chlorine to the pool and if you have it set at 10 this would send the most amount of chlorine to the pool. So you can automate the feed of chlorine to the pool but you will still need to manually test your water. We do not recommend placing tablets in the skimmer basket because this high concentration of chlorine goes directly back to your pump and can cause corrosion to your pool equipment. If you do not go with the automatic chlorinator we would recommend at least going with one of our floating chlorinators so you do not damage your equipment you may view our floating chlorinators here http://www.inyopools.com/chlorinators_floating.aspx 

?     Asked on 4/2/2007by Guest

Does the in-line chlorinator come with a check valve, or must it be purchased separately?

A  Answered on 4/2/2007 by InyoPools Product Specialist Patrick P.

No this does not come with the check valve. We would highly reccommend purchasing one of the check valves listed on this page http://www.inyopools.com/valves_flo_check.aspx 

?     Asked on 11/21/2007by Guest

How do I know if one chlorinator is enough for my pool?

A  Answered on 11/21/2007 by InyoPools Product Specialist Patrick P.

The Hayward CL200 or CL220 chlorinator will provide enough chlorine for up to 40,000 gallons of water.  You would need to calculate the volume of your pool to determine how many chlorinators you would need.  For example, if you have 60,000 gallons then you would use two CL200 or CL220 chlorinators.

?     Asked on 1/30/2012by Guest

What is the difference between an inline and offline chlorinator?

A  Answered on 1/30/2012 by InyoPools Product Specialist Patrick P.

An inline chlorinator would be plumbed directly inline with the plumbing.  For an existing pool, this would mean a section of pipe would need to be cut out to install the chlorinator.  An offline chlorinator attaches to existing plumbing by chlorinator tubing (holes would be drilled into existing pipe to attach the tubing.)


Est. Repair Time

Less than 1 hr

Tools Needed


The seams keep splitting where I thread into it.

Written on 6/16/2020 by Guest

I bought it with unions threads onto the outside can’t hardly split.

Were these instructions helpful? 


Est. Repair Time

Less than 1 hr

Tools Needed

Pipe cutters, primer and glue

1     0

No Problem. We Installed This When I Put the Pool In

Written on 3/28/2019 by Guest

I plumbed my pool in myself so it was very easy. I installed it where I wanted it to go, through the progression of my build, simple little machine. Just a tiny bit of movement of the dial changes the dose significantly.

Were these instructions helpful? 


Review Summary

 (Average 4.86  out of 5 stars)
7 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Helpful Review

The Most Recent Reviews