Pentair Rainbow 300C off-line chlorine and bromine tablet feederPentair Rainbow Off-Line Chlorinator #300C, R171022$15299
Pentair Rainbow 300C off-line chlorine and bromine tablet feeder
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Pentair Rainbow Off-Line Chlorinator #300C, R171022

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$15299
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Quick overview

  • Off-line install Mounts beside the pad rather than in the pipe run, so the plumbing stays intact.
  • Chlorine or bromine Takes either sanitizer tablet, for pools and spas alike.
  • Holds a real load 11 large tablets or 98 small ones between refills.
  • Sized 12,000 to 48,000 gallons Rated to treat pools in that range.
  • Pressure side Operates on the pressure side of the pump.
  • Hose and hardware Uses 1/4 inch feeder hoses, with a control valve and fittings.
Full description and specifications ↓

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Product details

The Pentair Rainbow 300C is an automatic off-line feeder for chlorine or bromine tablets, on pools and spas alike. It holds 11 large tablets or 98 small ones and is rated to treat 12,000 to 48,000 gallons.

Off-line, not in-line

An off-line feeder sits beside the equipment pad and draws through 1/4 inch feeder hoses rather than being cut into the pipe run. That makes it a retrofit you can do without reworking plumbing, and it means the feeder can be serviced or isolated without shutting the whole system down. It operates on the pressure side of the pump.

What comes with it

The feeder is supplied with a control valve and fittings, which is what sets the feed rate. Overall size is 14-3/4 inches long by 23 inches high by 22-1/4 inches wide, so allow that footprint next to the pad before you order.

Specifications
Brand Pentair
Manufacturer part number R171022
UPC 788379004224
Model 300C
Type Automatic off-line chlorine and bromine feeder
Application Pool and spa
Tablet capacity 11 large or 98 small tablets
Treats 12,000 to 48,000 gallons
Installation Pressure side of the pump, off-line
Hose size 1/4 inch feeder hoses
Includes Control valve and fittings
Dimensions 14-3/4" length by 23" height by 22-1/4" width
Shipping weight 3.95 lb
Ships Parcel

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Questions and answers

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

How many tablets does it hold?
11 large tablets or 98 small ones.
What size pool is it rated for?
12,000 to 48,000 gallons.
Where does it get plumbed in?
It is an off-line feeder that operates on the pressure side of the pump, connected with 1/4 inch feeder hoses. A control valve and fittings are included.
Can I use bromine instead of chlorine?
Yes. It is an automatic chlorine or bromine feeder for pools and spas.
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