E-cowlboy R171096 Pool Chlorinator 320 Automatic In-Line Feeder — 11-Tablet Capacity, Adjustable Flow

The E-cowlboy R171096 Pool Chlorinator 320 is an automatic in-line chlorine/bromine feeder built as a direct, high-capacity replacement for Pentair R171096 and Rainbow 320 models.

This unit delivers steady sanitizer distribution through an adjustable flow control in a closed, corrosion-resistant ABS body. It accepts large or small tablets, installs inline with standard return plumbing, and includes upgraded sealing and drain features to reduce maintenance and leaks. The design is intended for both inground and above-ground pools and spas across a wide size range, offering OEM-level function at a lower cost.

How does this chlorinator fit into my existing pool plumbing?

Installation is straightforward for typical pool return lines: the feeder mounts inline after the filter, heater, or cleaner depending on your plumbing layout. The package includes 2" PVC slip fittings plus 1.5" adapters so you can connect to common return sizes without custom parts.

• Includes 2" PVC slip fittings and 1.5" adapters for flexible hookups
• Can be installed behind heater, cleaner, or directly after filter if no heater
• Closed circulation design works with standard return flow

What capacity and pool sizes can it support?

The R171096-compatible feeder stores up to 11 large tablets or up to 98 small tablets, making it suitable for seasonal use or longer unattended periods. It covers a broad range of pool volumes: lower-feed configurations handle roughly 6,500–27,000 gallons, while top-feed settings extend coverage up to about 70,000 gallons.

• Holds 11 large or 98 small chlorine/bromine tablets
• Supports 6,500–27,000 gallons (bottom feed) and 18,000–70,000 gallons (top feed)
• Adjustable output to match sanitizer demand for different pool sizes

How does the unit control dosing and prevent leaks?

The feeder uses an adjustable control valve to regulate tablet exposure to circulating water, providing a steady, customizable sanitizer dose without constant manual adjustment. Leak resistance is improved with a double O-ring, thickened gasket, PTFE tape at threaded joints, and a vent plug that reduces pressure buildup.

• Adjustable flow control valve for consistent dosing
• Upgraded sealing: dual O-rings plus PTFE tape for threaded joints
• Top vent plug and bottom drain to relieve pressure and ease maintenance

What maintenance and safety features should I expect?

The closed system keeps tablets enclosed so no direct contact occurs during operation, which reduces exposure risks for families and pets. A bottom drain plug makes tablet changes and cleaning quick, while the ABS housing resists corrosion and is factory-tested for durability.

• Closed feeder design prevents direct tablet contact for safer handling
• Quick drain plug simplifies cleaning and reduces blockages
• Durable ABS plastic resists outdoor corrosion and wear

Who is this for: The E-cowlboy R171096 Pool Chlorinator 320 is aimed at pool owners and service technicians who need an affordable, reliable replacement for Pentair R171096 or Rainbow 320 feeders. It suits those managing small residential pools up to large commercial-style pools or spas who want adjustable dosing, reduced maintenance, and improved leak protection without replacing existing plumbing. If you want OEM-compatible performance with higher sealing standards and easy installation, this feeder is designed to be a practical upgrade.