By Hayward Pool Products



Part # CL200

Alternate Part #'s 42-150-1002, HAYCL200

Product Description

The CL200 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.  A simple dial valve allows you to easily control the amount of chlorine being dispensed.  No more floating chlorine dispensers in the pool or manually adding chlorine.  The CL200 sanitizes your pool automatically, holding 9 lbs of Trichlor tablets or sticks.  Hayward chlorinators are made from sturdy ABS thermoplastic and feature a durable Viton seal for the lid.


  • 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 offers safe and convenient access for adding tablets or sticks
  • Unique finger-release catch provides extra security
  • Includes mounting base
  • Easy installation for do-it-yourselfers
  • 1 year warranty
  • Please note: Unions are sold separately. If you do not have unions from a pre-existing CL200, you can purchase the UnionConnector Kit.


  • Pipe Size: 1-1/2 in.
  • Dimensions: (W) 9 in. x (H) 14-3/4 in.
  • Weight: 4.5 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

Miscellaneous Notes

Note: Chemical feeders should always be installed after a pool heater.

CAUTION: Extreme care must be exercised 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 6/20/2006by Guest

Does this model work with 1 1/2" PVC?

A  Answered on 6/20/2006 by InyoPools Product Specialist Patrick P.

Yes this is made for 1 1/2" PVC pipe.

?     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.


Est. Repair Time

Less than 1 hr

Tools Needed

Nut Drivers

Chlorinator was not working properly.

Written on 7/2/2021 by Guest

Disconnect old unit, set up new one night before, installed the new system next day. Works awesome. Love it.

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Est. Repair Time

Less than 1 hr

Tools Needed

Hands left and right ones

1     0

Old chlorinator was bad

Written on 6/1/2019 by Guest

Removed from box. Shut pool pump off. Spun the connections counterclockwise to remove the old on. Removed and disposed of properly. Set the new in position spun connections clockwise and installed chlorine 3" tabs. Turned pump back on and all is good!

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Est. Repair Time

Less than 1 hr

Tools Needed


2     0

IChlorinator Cover broke while removing to add tablets

Written on 6/10/2018 by Guest

There were more than one models to choose from. I had information for the original chlorinator. For new, I found the one which exactly match the dimension. Replacement was pretty simple. Stop the pump if it running. Just unscrew the unions on each side of the existing chlorinator. Remove the existing chlorinator. Wrap the male threads with white Teflon tape. Hand tighten each union. Start the pump and check for any leak. In my case hand tightening was good enough to make the connections leak tight. Did not need to tighten any more with wrench. Thanks INYO for sending me the right part and good instructions. Weather is nice and warm today. Buy. I am going to jump in my pool.

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