Home Pool Swimming Pool Chemical Feeders Rainbow Chlorine & Bromine Feeders Pentair Rainbow 320 Automatic In-Line Chlorine Feeder | R171096
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Pentair Rainbow 320 Automatic In-Line Chlorine Feeder | R171096

Pentair Rainbow 320 Automatic In-Line Chlorine Feeder | R171096 Pentair Rainbow 320 Automatic In-Line Chlorine Feeder | R171096

Parts AvailableParts Available
Platinum Preferred Manufacturer
  • 300 and 320 series filters available in clear amber for easy tablet level monitoring
  • Completely enclosed system - no special venting required. No escaping gases.
  • All Rainbow Feeders are NSF Listed
  • 50 PSI maximum operating pressure
The Efficient, Easy Way To Sanitize Your Pool Or Spa
Rainbow Automatic Chlorine/Bromine Feeders high capacity feeders are one of the easiest ways to sanitize large residential and commercial swimming pools using either chlorine or bromine slow dissolve tablets or sticks. These heavy-duty, high capacity feeders provide automatic sanitization for pools up to 332,000 gallons.
The freestanding Model 300 feeder and the in-line Model 320 feeder both feature an external fine-control valve that lets you adjust the feed rate to meet specific pool or spa requirements. The Model 300 feeder is ideal for retrofitting existing pools for automatic sanitization. The Model 320 feeder is designed for permanent installation in the return line of new or existing systems and dispenses sanitizer directly into your pool or spa, downstream of all equipment.
  • Completely enclosed systems-no escaping fumes.
  • Simple, trouble-free designs&-no special venting required.
  • Top loading makes it easy to add chemicals. Also available in clear amber for easy tablet viewing.
In-Line Feeders:
320 Series. For permanent installation in return line of new or existing pools or spas. Installs in return line on pressure side of pump downstream of all equipment. Standard with 2 in. slip PVC fittings and adapters for 1-1/2 in.
Holds 11 large or 98 small Bromine or slow dissolving Trichlor tablets. Treats 6,500 to 27,000 gallons bottom feed.

Brand: Pentair
Q & A
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Browse 5 questions Browse 5 questions and 9 answers
How long will chlorine last at fully open position?
A shopper on Jul 4, 2018
BEST ANSWER: That, of course, depends upon two factors: the temperature of the water and how long you run your pump each day. In summer, when the water is warm, and if you ran your pump 24/7, you could easily dissolve a full load of 3-inch tablets (9-10 tablets) in a week.
I have a 320 chlroinator that the cap is stuck and the ears on top are broken off. Do you have a suggestion for getting the cap off?
John E on Apr 3, 2017
BEST ANSWER: The easiest solution is a "strap wrench." These consist of a rubber strap connected to a hard plastic handle. You loop the rubber strap around any round object and back through the handle, then apply pressure with the handle and the cap should spin right off. Strap wrenches are available at Home Depot, Lowe's, and other tool/hardware stores for around $20.00.
A shopper on Feb 23, 2021
Will this work with my above ground pool with Pentair filter?
Terry S on Aug 11, 2021
BEST ANSWER: I have an in ground pool and the 320 automatic chlorinate works just fine. My neighbor has an above ground pool with a similar filter. I would say yes it should work, but I would consult a local pool store/pool install company. Cheers
Where is the serial #?
A shopper on Mar 12, 2021
BEST ANSWER: great product! sort of carefree pool life..
4.1 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Rainbow 320 pent
My last rainbow 320 lasted over 20yrs so I bought another to replace the old one
November 26, 2019
1 year ago
Rated 5 out of 5
Nice material, nice looking, smart dispenser, I am happy with the purchase, thank you!
December 6, 2019
1 year ago
Rated 5 out of 5
Rainbow 320
Installs easily and works as its supposed to. Good product.
May 9, 2014
Rated 4 out of 5
works well
I use Approx. six 3 chlorine tabs. Works very well and simple to maintain. No hard labor included so thats a relief.
August 5, 2015
Rated 4 out of 5
Easy to install and use and much better than the tablet floaters I had in the pool and spa that the kids always seem to flip upside down and the lid would come off and tabs would sink to the floor.
March 9, 2014
Rated 5 out of 5
Good product
This is a good product. Been using this type of feeder for many years
May 15, 2021
4 months ago
Rated 1 out of 5
Never received this unit from them. Call and email with no responses
June 21, 2021
3 months ago
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Adobe Acrobat PDF Owners Manual

Register your Pentair product online at www.pentair.com.

  • LIMITED WARRANTY: Pentair warrants its products to be free from defects in material and/or workmanship for a period of sixty (60) days (parts only) from the original date of purchase and/or installation. Customer agrees to prepay all shipping charges to Pentair.
  • EXTENDED WARRANTY: To receive a product extended warranty (longer than 60 days from the original date of installation), customer must:
  1. Register the product;
  2. Provide a copy of the sales receipt; and
  3. Provide a copy of the installation invoice, provided by the qualified installer, within 60 days of installation (if required). Certain products do not require qualified installation but still require product registration and copy of the sales receipt to receive the extended warranty.
  • TRADEGRADE WARRANTY: TradeGrade products must be purchased from a retail store (brick and mortar), pool builder or pool service company. If purchased online (via internet) the product will only receive a sixty (60) day limited warranty. View the list of TradeGrade products here.
  • ECOMMERCE (EC) WARRANTY: Products purchased from an Authorized Pentair Online Reseller receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty. To receive an eCommerce warranty, customer must:
  1. Register the product, and
  2. Provide a copy of the sales receipt
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 04/05/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.

 Adobe Acrobat PDF Warranty Information
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Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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