R172086 | Pentair In Line Chlorinator 320 Control Valve

The Pentair R172086 control valve is a direct-fit replacement part for the 320 and 322 in-line automatic chlorine/bromine feeder systems — and select 300-series off-line feeders — giving you precise flow control over chemical feed rates. Engineered as a ½-inch FPT valve, it regulates water flow into the feeder unit, thereby controlling chlorine or bromine output for consistent pool sanitation. Constructed from chemical-resistant materials suitable for chlorinated pool water, this valve ensures reliable performance and helps maintain proper water balance and sanitation levels.

Highlights

• OEM Replacement Valve: Designed specifically for Pentair Rainbow 320, 322, and related feeder models — ensures proper fit and installation with no modification needed.

• ½-Inch FPT Connection: Standard female pipe thread size ensures compatibility with typical plumbing on automatic feeders.

• Precise Flow Control: Regulates water feed into the feeder unit to maintain stable chlorine/bromine levels and optimize chemical usage.

• Chemical-Resistant Construction: Built to withstand exposure to chlorine/bromine and pool water conditions without degradation — for long-term durability.

• Essential for Feeder Function: A fully functional control valve is critical for correct feeder operation; replacing a faulty valve restores chemical feed reliability and pool hygiene.

Compatibility

• Pentair In-Line Rainbow Chemical Feeder Models: 320, 322, 300-29X

Additional Info

The Pentair R172086 control valve regulates water flow into Rainbow 320 and 322 inline feeders and related 300-series offline feeders. This section helps Discount Pool Mart customers confirm valve compatibility, diagnose feeder issues, and understand proper adjustment before leaving the store. These FAQs focus on ensuring chlorine or bromine levels stay consistent after installation.

Compatibility and Feeder Matching

Walk-in customers often bring photos of their feeder to confirm this valve fits.

How can I verify the R172086 fits my Rainbow feeder?

If you have a 320, 322, or compatible 300-series feeder, the R172086 replaces the original flow valve. Staff at Discount Pool Mart can verify fit when you bring a picture or the old valve.

Does this valve work with both chlorine and bromine feeders?

Yes, it works with either sanitizing method and maintains stable output regardless of chemical type.

Can this valve fix inconsistent chlorine levels in the pool?

Yes, poor flow control is a common cause of fluctuating sanitation. Replacing the valve often stabilizes chemical output.

Installation and Troubleshooting

These questions help customers understand how and why the valve affects chemical feed.

How do I install the R172086 valve?

Thread it into the feeder’s inlet port and tighten securely. Once installed, adjust the flow setting gradually until chlorine or bromine levels stabilize.

Why is my feeder still under-dosing or over-dosing after replacement?

Check that the pump is running long enough, ensure the control valve is open to the correct position, and verify the feeder has adequate tablets.

What symptoms indicate my old valve has failed?

Stuck adjustments, poor flow, leaking threads, or erratic chlorine output are common signs of valve failure.

In-Store Pickup and Local Guidance

This section supports customers preparing for maintenance.

Should I bring my old valve or feeder cap to confirm fitting?

Yes, Discount Pool Mart staff can quickly identify compatibility with visual reference.

Is this valve normally in stock for same-day pickup?

It is commonly carried, though calling ahead ensures immediate availability.

Do customers buy other parts with this valve?

Many also purchase O-rings, check valves, or new tab sets for complete feeder servicing.