Pentair Rainbow 320 Short Feed Tube 5/8" OD | R172091
Pentair
SKU: R172091
Pentair Rainbow Short Feeder Tube (Black) for Model 320/322 In-Line Chlorinators | R172091
The Pentair Rainbow R172091 is the short black feeder tube used on Pentair/Rainbow in-line automatic chlorine/bromine feeders (Models 320 and 322). This tubing connects the chlorinator body to the plumbing tee/fittings and is part of the small feeder line assembly that carries water through the feeder for sanitizer pickup. Replace it if the original tube is brittle, cracked, leaking, or no longer seals tightly at the fittings.
Key Features
- OEM short feeder tube for Rainbow in-line chlorinators.
- Restores leak-free tubing connection between the feeder body and plumbing tee/fitting.
- Helps maintain consistent chlorinator output by preventing small leaks and flow issues in the feeder line.
- Black tubing sized for the factory feeder tube assembly.
Compatibility
- Fits: Pentair Rainbow in-line automatic feeders Model 320 and Model 322
- Used in: Chlorinator tubing run that connects the feeder body to the plumbing tee/fittings (as shown on parts diagrams)
Specifications
- Brand: Pentair / Rainbow
- Part Number: R172091
- Type: Short feeder tube / chlorinator tubing
- Color: Black
- Outside Diameter: 5/8" OD
- Common Size Listing: 5/8" x 1/2" x 7-3/8"
- Quantity: Sold individually
Common Reasons to Replace
- Tubing is brittle, discolored, cracked, or leaking
- Slow seepage at the tubing connection points or compression fittings
- Feeder output becomes inconsistent due to restricted or compromised tubing
- Tubing will not seat/seal correctly after feeder service
Installation Notes
- Shut off the pump and relieve system pressure before servicing the feeder.
- Remove the old tubing and inspect the fittings for cracks or stripped threads.
- Cut/fit tubing cleanly and ensure it is fully seated before tightening nuts/clamps.
- Avoid over-tightening plastic compression fittings to prevent cracking.
- After restart, inspect for leaks and confirm normal flow through the feeder line.
Related Products
- Search Aqua Pool Supply for R172091
- Rainbow 1/2" 90° Tube Fitting w/ Nut (R172272)
- Rainbow Compression Nut Only (R172274)
- Rainbow Inline Check Valve, 1/2" Tube x Tube (R172324)
- Rainbow 320/322 Lid O-Ring (R172009)
- Rainbow Model 320 parts
- Rainbow Model 322 parts
Maintenance Tips
- Inspect feeder tubing at least once per season; replace any tubing that is stiff, brittle, or shows stress marks.
- Keep water chemistry balanced—extreme pH and high calcium can accelerate scaling and shorten feeder component life.
- After refilling/servicing the feeder, re-check the tubing and fittings during the next few run cycles for slow seepage.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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