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

The Pentair R172288 Rainbow Feeder Check Valve is designed to prevent backflow in Pentair Rainbow automatic chlorine and bromine feeder systems using 1.5 inch or 2 inch plumbing. Installed downstream of the feeder, this check valve helps stop highly chlorinated water from flowing backward into the pool plumbing, pump, or heater when the system shuts off. Its internal spring-loaded design allows normal forward flow while closing securely during pressure loss, protecting sensitive equipment from chemical damage. Built from durable, chemical-resistant materials, the R172288 check valve is commonly used during new feeder installations or when replacing worn or sticking valves in existing Rainbow feeder setups.

Highlights

• Backflow Prevention Design: Stops concentrated chlorinated water from reversing into heaters, pumps, or other pool equipment.

• Dual Pipe Compatibility: Designed for use with both 1.5 inch and 2 inch pool plumbing configurations.

• Spring-Loaded Operation: Allows smooth forward water flow while sealing tightly when pressure drops.

• Chemical- Resistant Construction: Built to withstand prolonged exposure to chlorine, bromine, and treated pool water.

• Feeder Protection Component: Commonly installed with Pentair Rainbow automatic chlorinators and brominators for system safety.

Compatibility

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

Note: This part may be compatible with your system, please refer to your owners manual to ensure compatibility.

Additional Info

The Pentair R172288 Rainbow Feeder Check Valve is used to prevent chemical backflow in Pentair Rainbow automatic chlorine and bromine feeder systems. This section helps Discount Pool Mart walk-in customers identify backflow-related issues, confirm proper pipe sizing, and prepare for installation before picking up the valve locally. These FAQs focus on compatibility, troubleshooting, and common feeder safety concerns.

Compatibility and Feeder Fitment

Walk-in customers often ask how to confirm correct valve placement.

How do I know if the R172288 check valve fits my Rainbow feeder setup?

If your feeder is installed on 1.5 inch or 2 inch return plumbing downstream of the pump, this valve is commonly used. Bringing photos of your plumbing layout to Discount Pool Mart helps verify placement and sizing.

Can this check valve be used with both chlorine and bromine feeders?

Yes, it is designed for Pentair Rainbow automatic feeders using either chlorine or bromine.

Does this valve work on both inline and offline feeders?

Yes, it is commonly installed downstream of both inline and offline Rainbow feeder configurations.

Backflow Prevention and Troubleshooting

These questions help customers understand why the valve is critical.

What problems occur if a feeder check valve fails?

Without a working check valve, highly chlorinated water can flow backward into heaters or pumps when the system shuts off.

How can I tell if my existing check valve is stuck or failing?

Common signs include chemical odor near equipment, heater corrosion, or visible scale buildup downstream of the feeder.

Does a spring-loaded check valve require regular replacement?

Over time, springs and seals can weaken due to chemical exposure, making periodic replacement important.

In-Store Pickup and Local Guidance

These FAQs help customers prepare before visiting Discount Pool Mart.

Should I bring pipe measurements or photos before picking one up?

Yes, walk-in customers often bring photos to confirm whether 1.5 inch or 2 inch plumbing is used.

Is this check valve typically available locally?

It is commonly stocked, though checking availability before visiting is recommended.

Do customers often replace other feeder parts at the same time?

Yes, tubing, control valves, and saddle gaskets are frequently serviced together.