Pentair Rainbow 320 in-line chlorinator R171096, front viewPentair Rainbow 320 In-Line Chlorinator, R171096 In stock$14999
Pentair Rainbow 320 in-line chlorinator R171096, front view
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Pentair Rainbow 320 In-Line Chlorinator, R171096

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$14999
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Quick overview

  • In-line installation plumbs permanently into the return line on the pressure side, after the filter and heater.
  • Trichlor or bromine takes large or small slow-dissolving tablets.
  • External feed control a fine-control valve on the outside sets the feed rate to suit the pool or spa.
  • Top loading tablets go in from the top.
  • Fully enclosed no escaping fumes and no special venting required.
  • Extension available a feeder extension raises tablet capacity for longer stretches between refills.
Full description and specifications ↓

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Product details

The Pentair Rainbow 320 is the in-line tablet feeder: it is plumbed permanently into the return line, on the pressure side of the pump and downstream of the filter and heater, and dispenses sanitizer straight to the pool or spa after all the equipment.

How it works

Load large or small slow-dissolving trichlor or bromine tablets from the top. An external fine-control valve sets the feed rate to suit the pool or spa. The system is fully enclosed, so there are no escaping fumes and no special venting, and it cuts down on handling chemicals by hand.

Capacity and options

Pentair offers a feeder extension that raises tablet or stick capacity, useful for going away without the pool running short of chlorine. The 320 is the in-line model; if you need a feeder that tees off the return line rather than sitting in it, the off-line equivalent is the Rainbow 300.

Specifications
Brand Pentair
Manufacturer part number R171096
UPC 788379004385
Model Rainbow 320
System type In-line
Chemical type Trichlor or bromine tablets
Tablet size Large or small
Pool type In ground, residential
Installation Pressure side, downstream of filter and heater
Feed control External fine-control valve
Loading Top
Shipping weight 4.5 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Where does it go in the plumbing?
In the return line on the pressure side of the pump, downstream of the filter and heater, so sanitizer goes to the pool after all the equipment.
Can I use bromine tablets?
Yes. The Rainbow 320 takes large or small slow-dissolving trichlor or bromine tablets.
Is this the in-line or the off-line model?
In-line. It is plumbed directly into the return line. The off-line version, which tees off the line with tubing, is the Rainbow 300.
Can I increase the tablet capacity?
Yes. Pentair makes a 20 in. chlorinator extension for its automatic feeders that raises the tablet or stick capacity.
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