Pentair Rainbow R270531 1 inch threaded union for HC series chemical feedersPentair Rainbow 1" Threaded Union, HC Series, R270531 In stock$2899
Pentair Rainbow R270531 1 inch threaded union for HC series chemical feeders
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Pentair Rainbow 1" Threaded Union, HC Series, R270531

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$2899
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Quick overview

  • Genuine Pentair part R270531 is the factory union for the Rainbow HC series feeder.
  • 1" threaded Sized and threaded to match the HC series feeder ports.
  • Union connection Lets the feeder be disconnected for service without cutting the plumbing.
  • HC series feeders Listed for the Rainbow automatic feeder models HC-3315, HC-3330 and 3340.
  • Common service item Union nuts and their seals are what usually leak on a feeder that has been opened many times.
  • Order by part number R270531 avoids a near miss on thread type or size.
Full description and specifications ↓

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Product details

The Pentair R270531 is the 1" threaded union used on Rainbow HC series automatic chemical feeders, including the HC-3315, HC-3330 and 3340. It is the genuine Pentair part.

What the union is for

A feeder has to come out of the line from time to time, for service, for a rebuild, or to be replaced outright. A union is the fitting that makes that possible without a saw: undo the nut, lift the feeder out, and put it back on the same threads afterwards.

When to replace one

Unions are opened and closed more than any other fitting on a feeder, and each cycle wears the nut threads and the seal face. If the joint weeps after tightening, or the nut no longer pulls up cleanly, replacing the union is faster and more reliable than trying to seal a worn one. Check that your feeder is an HC series model before ordering, since feeder threads are not shared across families.

Specifications
Brand Pentair
Manufacturer part number R270531
UPC 788379702151
Type Threaded union
Size 1"
Connection Threaded
Fits Pentair Rainbow automatic feeders, models HC-3315, HC-3330, 3340
Shipping weight 0.2 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 union fit?
The Pentair Rainbow HC series automatic feeders, models HC-3315, HC-3330 and 3340.
What size is it?
1 inch, threaded.
Why use a union instead of a straight fitting?
A union comes apart at the nut, so the feeder can be removed for service or replacement without cutting into the plumbing.
Is it a genuine Pentair part?
Yes. It is the Pentair Rainbow OEM part, number R270531.
Ask your own question