Pentair R172288 Rainbow Feeder Check Valve | 1.5" - 2"

The Pentair R172288 Rainbow Feeder Check Valve provides critical backflow protection for automatic chlorine and bromine feeder installations using one and one half inch or two inch plumbing. Positioned after the feeder, this valve helps block concentrated sanitizer water from flowing backward into pool equipment when circulation pressure drops. Manufactured to Pentair OEM specifications, the spring-loaded design opens during normal operation and closes securely when the system shuts down. Its chemical-resistant construction supports dependable performance in demanding pool environments and helps extend the service life of connected equipment.

Highlights

• Protects Pool Equipment: Helps prevent chemical backflow that can damage heaters, pumps, and internal plumbing components.

• Dual Plumbing Compatibility: Designed for use with both one and one half inch and two inch pipe sizes commonly found in feeder installations.

• Automatic Spring Action: Opens smoothly with normal water flow and seals tightly when pressure decreases.

• Built for Chemical Exposure: Durable materials resist chlorine, bromine, and treated pool water over extended service periods.

• Rainbow Feeder Application: Commonly used with Pentair Rainbow automatic chlorinators and brominators to improve system safety.

Compatibility

• Pentair Rainbow Automatic Chlorine/Bromine Chemical Feeder Models: 300, 302, 320, 322

Additional Info

The Pentair R172288 Rainbow Feeder Check Valve protects pool equipment by preventing backflow of concentrated chemicals from Rainbow automatic feeders. This section supports Wholesale Pool Mart customers, including local service professionals, by addressing fitment, failure patterns, and efficient service planning. These FAQs focus on system protection and long-term reliability.

Compatibility and System Verification

Service professionals often confirm plumbing size before installation.

Is the R172288 check valve compatible with standard feeder return lines?

Yes, it is designed to work with both 1.5 inch and 2 inch pool plumbing commonly used on feeder returns.

Can this valve be installed on systems with heaters?

Yes, it is especially important on systems with heaters to prevent chemical backflow damage.

Does this valve replace older Rainbow check valve designs?

Yes, it is commonly used when upgrading or replacing worn or sticking feeder check valves.

Field Performance and Equipment Protection

These FAQs address real-world service scenarios.

Why do feeder check valves fail over time?

Continuous chemical exposure can weaken internal springs and sealing surfaces.

Does replacing the check valve help extend heater life?

Yes, preventing chemical backflow significantly reduces corrosion risk inside heaters.

What tests should be done after installation?

Technicians typically verify proper flow direction and ensure the valve closes when the pump shuts off.

Local Pricing and Service Planning

Wholesale Pool Mart customers often plan parts ahead of service calls.

Can technicians check nearby shop stock before arriving onsite?

Yes, checking nearby shop stock helps keep service schedules on track.

Do service teams usually carry feeder check valves?

Yes, they are common service items due to frequent chemical-related wear.

Are additional plumbing parts often replaced together?

Yes, unions, fittings, and feeder tubing are commonly refreshed during valve replacement.