Inline Hayward Chlorinator 2 Inch Slip - CL2002S



Model # CL2002S

By Hayward Pool Products

  4.8 Average  



Model # CL2002S

Warranty 1 Year

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


?     Asked on 7/13/2019 by bobby woodberry

where can i find pvc pipe to fit the 11/2 silp connected

A  Answered on 7/16/2019 by InyoPools Product Specialist Hector F.

You should be able to find PVC at your local hardware store and if you need to reduce those 2 inch connectors to adapt to the 1.5 inch PVC then you can use these reducer bushings.

?     Asked on 7/4/2019 by Chris Conti

I do not need the slip fittings is this unit threaded on both ends for direct install into a 2 inch line with quick slip connects already there?


A  Answered on 7/26/2019 by Industry Professional

Based on your picture & the feeder model # you have 1-1/2" & not a 2" plumbing. See snip image & part # CL200 ( 42-150-1002 )


?     Asked on 7/2/2019 by Doug

Hello! We have a 60,000 gallon inground, does this version cover above 60,000?

A  Answered on 7/2/2019 by InyoPools Product Specialist Lennox H.

Hi, Doug. This CL2002S can be used to sanitize a 60,000 gallon pool. 

?     Asked on 5/4/2019 by Eric Cooney

Will this work with a variable speed pump

A  Answered on 5/5/2019 by InyoPools Product Specialist Lennox H.

Hi, Eric. This chlorinator required a flow rate of 50-90 GPM. The variable speed pump will need to operate at an RPM that will provide sufficient water flow. The Powerclean Ultra VS In-Line Chlorinator - 25280-150-000 is a better option. 

?     Asked on 6/18/2018 by Norman

Hell, can this chlorinated be used with 2 1/2” pipes?

A  Answered on 6/18/2018 by InyoPools Product Specialist Lennox H.

Hi, Norman. Yes, you can. Pipe adapter will be required to install this unit. 

?     Asked on 5/20/2018 by Nate

I purchased the cl200 in line chlorinator what fittings do I need to attach it to 2"pvc? I only have the chlorinator

A  Answered on 5/21/2018 by InyoPools Product Specialist Lennox H.

Hi, Nate. You will need the Union Connectors 1-1/2" Skt x 2" Slip - SP1500UNPAK2C

?     Asked on 2/19/2018 by Bryan Carthew

I want to fit one of your inline chlorine feeders in my system. Pump room and equipment are under ground and below waterline. All pipe work is 2" [50mm] and i'm concerned that your feeder will restrict flow and cause back pressure in the filter. Could you set my mind at ease. Pool capacity-: 65,500 litres. Sand filter flow -: 14 m3 /hr. Pump flow 10 m3/hr. Many thanks.

A  Answered on 2/19/2018 by InyoPools Product Specialist Lennox H.

Hi, Bryan. This chlorinator is equipped with 2" pipe socket connections and can handle a flow rate of 11.4 to 20.4 m3/hr. This unit will not create back pressure within your circulation system. 

?     Asked on 7/10/2017 by

I installed a Cl 200 and it sounds like a ocean running through it -My son has the same unit and it is very quiet what can i do to make this quiet

A  Answered on 8/5/2017 by InyoPools Product Specialist Alex V.

John, You may have air in your lines. The air will typically work its way out after a few days.  

?     Asked on 5/23/2017 by Nicholas Vadasz

May come across as a stupid question and if so forgive me. If the chlorinator is set to "Full" setting with one tablet can I increase my chlorine level with 2 or more tablets? In other words, should I load the chlorinator with 9 tablets then adjust the chlorine level via the flow control? What do recommend?

A  Answered on 5/23/2017 by InyoPools Product Specialist Patrick P.

Hi Nicholas, Yes it would be no problem to fill the chlorinator with 9 tablets and then use the control valve for your output

?     Asked on 4/16/2017 by RD

When adding unions to the CL2002S is there a reason to use the SP14982S union, over a standard schedule 40 PVC union?

A  Answered on 4/17/2017 by InyoPools Product Specialist Scott W.

Standard union connectors will work just fine just as long as the threads fit.

?     Asked on 3/20/2017 by

What is the length of the chlorinator tubing I need for the pool

A  Answered on 3/20/2017 by InyoPools Product Specialist Andy O.

Hello- This is an inline chlorinator so you will not need tubing because it is installed directly into the plumbing. If you click here, you can see the installation recommendation on page 4.

?     Asked on 7/21/2016 by


A  Answered on 7/23/2016 by InyoPools Product Specialist Lennox H.

Hi, The problem could be with the control valve, it might need to be replaced.

?     Asked on 5/29/2016 by Joe

Can this be used for Bromine tabs also?

A  Answered on 5/29/2016 by InyoPools Product Specialist Alex V.

Joe, This can no be used for Bromine. You will need a brominator which you can view here:

?     Asked on 9/7/2015 by Bob Farar

I have a CL2002S chlorinator. It has no adjustment. It is either off or in maximum chlorination with no in between. My pool was sky high in chlorine. I now have been watching chlorine levels and either turn it off or on for adjustment. What can be done to fix this adjustment problem?

A  Answered on 9/11/2015 by InyoPools Product Specialist Lennox H.

Hi Bob, You will need to replace the Control Knob Assembly w/O-ring (CLX200PA).

?     Asked on 8/18/2015 by GERALD SETTA


A  Answered on 8/21/2015 by InyoPools Product Specialist Lennox H.

Hi Gerald, If your pipe measures 2" OD, you will need the CL200 Chlorinator and the Union Connectors 1 1/2" Skt X 2" Slip WG (SP1500UNPAK2C).

?     Asked on 7/6/2015 by Randy

Yesterday I was having trouble securing the screw-top lid to my in-line chlorinator. It would not lock-in place and was leaking? It was threaded properly.

A  Answered on 7/8/2015 by InyoPools Product Specialist Lennox H.

Hi Randy, You may need to replace the Lid O-ring, (viton) (CLX200K). Overtime is can become stretched and when that happens will prevent lid from closing properly.

?     Asked on 6/4/2015 by ron

Can the side socket connectors be removed to adjust the fit pipe connector installed glued and to short on one side?

A  Answered on 6/7/2015 by InyoPools Product Specialist Alex V.

Ron, If the pipe is too short, you can try cutting the pipe and using an additional piece of pvc and pvc coupler to extend the length.

?     Asked on 9/26/2014 by Guest

I have a Hayward inline chlorinator now and for approx 10 years. For the past 4-5 years we have difficulty unscrewing the top off to add the chlorine and to the point i can no longer add the chlorine myself. I need to ask someone else to do it and it is difficult for them as well. We would like to replace the chlorinator but afraid to get this same model with a screw top as we may have the same difficulty. Does Hayward sell a latch-on type lid rather than a screw-on type?

A  Answered on 9/26/2014 by InyoPools Product Specialist Patrick P.

Unfortunately Hayward has not changed the design. The best way to prevent this from recurring is to keep the lid o-ring lubricated and to use the lid wrench - Part number 0211-0 or click on this link -

?     Asked on 9/19/2014 by Guest

I am thinking of purchasing a chlorinator, I use flex hoses right now. Will I have to change to solid piping?

A  Answered on 9/19/2014 by InyoPools Product Specialist Patrick P.

You can use flex pvc or hose to plumb in the chlorinator. Keep in mind that both will deteriorate at a faster pace vs hard pvc and will need to be replaced eventually.

?     Asked on 8/23/2013 by Guest

Does the CL2002S chlorine feeder come with unions?

A  Answered on 8/23/2013 by InyoPools Product Specialist Patrick P.

Per the manufacturer, the CL2002S chlorinator comes with socket connectors, not unions.   They do not make unions for the 2" model. They advised that you can plumb it using 2" unions but these would attach to the pipe, not the CL2002S itself. They suggested their SP14982S union.

?     Asked on 1/30/2012 by 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.)

?     Asked on 11/21/2007 by 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 4/2/2007 by 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 

?     Asked on 3/10/2007 by 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 

?     Asked on 7/13/2006 by 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.


Est. Repair Time

Less than 1 hr

Tools Needed

Pipe cutters, primer and glue

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? 


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