Pentair Rainbow R18706 compression nut for 1/4 in. chemical feeder tubingPentair Rainbow Compression Nut for Chemical Feeder Tubing, R18706 In stock$599
Pentair Rainbow R18706 compression nut for 1/4 in. chemical feeder tubing
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Pentair Rainbow Compression Nut for Chemical Feeder Tubing, R18706

Ask a questionMPN R18706
$599
In stock
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Quick overview

  • Genuine Pentair Factory part R18706 for the Rainbow chemical feeder line, not a hardware store substitute.
  • Sized for 1/4 in. tube Made for the 1/4 in. chlorinator tubing used on these feeders.
  • Fits four feeder models Rainbow 300, 302, 300-19 and 300-29 chemical feeders all use this nut.
  • Seals the tubing connection The nut is what clamps the tube so feed solution does not weep at the fitting.
  • Small part, common failure Nuts crack and strip after seasons of chemical exposure and get overtightened at service time.
  • Sold on its own Order the count you need rather than replacing a whole valve assembly.
Full description and specifications ↓

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Product details

The Pentair Rainbow R18706 is the compression nut used on the 1/4 in. tubing connections of the Rainbow chemical feeder. It fits the 300, 302, 300-19 and 300-29 feeders.

What it does

The nut threads onto the fitting and clamps the 1/4 in. feed tube in place. It is the piece that holds the seal, so when it cracks, strips or will no longer draw down tight, the connection starts to weep chemical instead of feeding it.

Before you order

This is the nut only. The check valves and the poly tubing that run with it are separate items, so if the tubing is stiff or discolored it is worth replacing at the same time. Keeping a spare nut on the shelf saves a service call when one strips during a routine feeder rebuild.

Specifications
Brand Pentair
Manufacturer part number R18706
UPC 788379005900
Type Compression nut, 1/4 in. tube
Fits Pentair Rainbow 300, 302, 300-19 and 300-29 chemical feeders
Shipping weight 0.05 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which feeders does this nut fit?
The Pentair Rainbow 300, 302, 300-19 and 300-29 chemical feeders.
What size tubing does it take?
It is the 1/4 in. tube nut for these feeders.
Does it come with the check valve or the tubing?
No. This listing is the compression nut alone. Check valves and chlorinator tubing are separate parts.
Is it a genuine Pentair part?
Yes. It is Pentair Rainbow part R18706.
Ask your own question