Pentair 1/2" x 90 Deg NPT Tube Fitting w/ Nut | R172272
Pentair
SKU: R172272Z
Pentair Rainbow 1/2" MPT 90° Tube Fitting w/ Compression Nut | R172272
The Pentair Rainbow R172272 is a 90-degree elbow tube fitting with an integrated compression nut, used on select Pentair Rainbow automatic chlorine/bromine feeders. This fitting threads into the feeder body (1/2" male pipe thread) and provides a secure, right-angle connection to the feeder tubing line. It’s commonly replaced when the original fitting is cracked, leaking at the threads, or no longer seals tightly on the tubing.
Key Features
- 90° elbow fitting for clean routing of feeder tubing in tight equipment pads.
- 1/2" MPT (NPT) threaded connection to the feeder body or related plumbing port.
- Compression nut included to clamp and seal the feeder tubing.
- Helps stop leaks caused by cracked fittings, stripped threads, or worn compression surfaces.
Compatibility
- Pentair Rainbow feeders: Model 300-29X (offline), Model 320 (inline), Model 322 (inline)
- Also used on certain Rainbow feeder accessories/assemblies that specify R172272 in the parts list
Specifications
- Brand: Pentair / Rainbow
- Part Number: R172272
- Type: 90° tube fitting (elbow) with compression nut
- Thread: 1/2" MPT (NPT)
- Tubing Connection: Compression-style (for feeder tubing)
- Quantity: Sold individually
Common Reasons to Replace
- Water dripping at the feeder tubing connection or around the compression nut
- Cracked elbow body from age, chemical exposure, or winter freeze damage
- Stripped/compromised threads causing seepage at the feeder port
- Brittle tubing that no longer seals properly (often replaced at the same time)
Installation Notes
- Shut off the pump and relieve pressure before servicing the feeder or tubing lines.
- Confirm the elbow orientation before final tightening so the tubing routes without kinks.
- Cut tubing cleanly and square, then fully seat it before tightening the compression nut.
- Use a thread sealant suitable for plastic threads and avoid over-tightening.
- After restart, inspect for slow seepage at both the threaded connection and compression nut.
Related Products
- Rainbow Compression Nut Only (R172274)
- Rainbow 300-29X Hardware / Parts Bag (R172275)
- Rainbow Inline Check Valve, 1/2" Tube x Tube (R172324)
- Rainbow Feeder Lid O-Ring (R172009)
- Rainbow 300-29X parts
- Rainbow 320 parts
- Rainbow 322 parts
Maintenance Tips
- Inspect feeder tubing seasonally; replace tubing that is brittle, discolored, or cracked to prevent leaks.
- Keep water chemistry balanced—extreme pH and high calcium can accelerate scaling and component wear.
- If you service the feeder, re-check all tubing fittings after the next few run cycles for slow seepage.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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