Pentair HC‑3340 High-Capacity Off-Line Chlorinator – 40 lb Tablet Feeder | R171240

Pentair HC‑3340 High-Capacity Off-Line Chlorinator – 40 lb Tablet Feeder | R171240

Pentair R171240 HC‑3340 high-capacity off-line chlorinator holds 40 lb tablets. Enclosed 1" plumbing feeder treats up to 332K gal with chlorine or 61K gal with bromine.

• Massive 40 lb Tablet Capacity – Stores slow-dissolve chlorine or bromine tablets for long maintenance cycles.

• Large Volume Treatment – Sanitizes up to ~332,000 gal with chlorine or ~61,000 gal with bromine.

• Fully Enclosed Design, No Vent Needed – Safely handles up to 50 psi without gas release.

• 1" Off‑Line Plumbing with Unions Included – Easy install using standard fittings; no drilling into return lines.

• External Control Valve + Drain/Vent System – Allows precise chemical dosing and simple servicing.

The Pentair R171240 Rainbow HC‑3340 is a commercial-grade off-line chlorinator engineered to automate sanitizer delivery for large pools and institutional settings. The unit’s 40 lb tablet capacity assists in extended maintenance intervals, with dosing capability for up to 332,000 gallons using chlorine or 61,000 gallons with bromine.

Installation is streamlined with 1" plumbing and included union fittings, enabling easy add-on to return lines without cutting existing pipe. The feeder is built to hold up to 50 psi, and its fully enclosed design keeps hazardous gas sealed inside.

Designed with durability and upkeep in mind, the HC‑3340 features a heavy-duty flow control valve, accessible drain and vent ports, and a robust housing that opens via a twist-off lock ring. Ideal for commercial pools, hotels, and large residential systems, this chlorinator reduces manual handling while ensuring continuous, trouble-free sanitation.

We want you to have quick and easy access to warranty information for all the brands we carry. Please click on the links below to view each manufacturer’s warranty page:

• Pentair Warranty
  
• A&A (Pentair In-Floor) Warranty
  
• Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
  
• Paramount Warranty
  
• BlueSquare Warranty
  
• Hayward Warranty
  
• All Other Manufacturer Warranties
  

Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.