Pentair Rainbow 335 Chlorine/Bromine Floating Dispenser for 1" Tablets | R171090
Pentair
SKU: R171090
Pentair R171090 1″-Tablet Floating Dispenser
The Pentair R171090 floating dispenser is designed for use in spas and small swimming pools to hold and dispense 1-inch chlorine or bromine tablets. It features a buoyant polyethylene body, foam-filled construction, and an adjustable control dial for regulating chemical release.
Key Features
- Holds 1″ diameter chlorine or bromine tablets.
- Floating design—ideal for small pools, spas or secondary sanitation zones.
- Adjustable feed control allows you to set the release rate based on sanitizer demand.
- Durable construction with foam fill and polyethylene body for resistance to pool conditions.
Technical Specifications
- Part Number: R171090
- Tablet Size: 1″ diameter only
- Application: Floating chemical dispenser for spas or small pools with low flow or localized areas
- Color / Finish: Beige/White body (typical model)
Installation & Usage Notes
Prior to use, fill the dispenser with the appropriate number of 1″ tablets. Set the control dial to a low rate to begin, monitor sanitizer levels over 24-48 hours, then adjust the dial upward if needed. Place the dispenser in the water so it floats freely and away from skimmer suction or return jets for even distribution. Periodically inspect the dispenser, refill tablets, and adjust the feed as the season progresses.
Maintenance Tips
- Inspect the dispenser casing for cracking, flotation integrity or chemical-damage—replace if any damage is found.
- Check water chemistry regularly, and if sanitizer levels decline even though the dispenser is full and dialed high, increase the feed rate or consider an inline feeder for larger pools.
- Store the unit in a dry, shaded place when not in use to preserve the foam fill and prevent deformation.
Why Choose This Dispenser?
For pool service professionals, spa technicians and retail inventory, the Pentair R171090 offers a cost-effective, simple solution for localized or secondary chemical dispensers. Its floating design and adjustable rate make it ideal for maintenance zones, spas or smaller pools where full-scale inline feeders are overkill.
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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