Pentair 274426Z union adapter kit, 2-1/2 in. x 2 in.Pentair Union Adapter Kit 2-1/2" x 2", 274426Z In stock$5299
Pentair 274426Z union adapter kit, 2-1/2 in. x 2 in.
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Pentair Union Adapter Kit 2-1/2" x 2", 274426Z

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$5299
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Quick overview

  • Genuine Pentair part 274426Z, the factory union adapter kit.
  • 2-1/2 in. to 2 in. adapts the larger port down to 2 in. plumbing.
  • For Clean and Clear Plus the union kit used on the Clean and Clear Plus filter.
  • For the FullFloXF backwash valve the same kit serves the FullFloXF valve connection.
  • Kit, not a single fitting supplied as the adapter kit rather than a loose nut or tailpiece.
  • Unions mean serviceability union connections are what let you pull a valve or a filter without cutting pipe.
Full description and specifications ↓

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Product details

Pentair 274426Z is the union adapter kit in 2-1/2 in. by 2 in., used on the Clean and Clear Plus filter and the FullFloXF backwash valve. It is the genuine Pentair part.

What it is for

The kit takes the larger 2-1/2 in. port and adapts it to 2 in. plumbing, at a union so the connection can be broken later. That last part is the whole point of a union at an equipment pad: it is what lets a filter or a valve come off for service without a saw and a pile of new fittings.

When to replace one

Union nuts crack when they are over tightened, threads strip, and the sealing face gets scored by grit. Once any of that has happened the joint weeps no matter how hard it is cranked down, and the joint should be replaced rather than tightened further. Fitting a new kit is the reliable end to a persistent drip at the filter.

Specifications
Brand Pentair
Manufacturer part number 274426Z
UPC 788379855611
Type Union adapter kit
Size 2-1/2 Inch x 2 Inch
For use with Pentair Clean and Clear Plus filter, FullFloXF backwash valve
Shipping weight 1.55 lb
Ships Parcel

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Questions and answers

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

What size is this kit?
2-1/2 in. by 2 in. It adapts a 2-1/2 in. port to 2 in. plumbing.
What does it fit?
The Pentair Clean and Clear Plus filter and the FullFloXF backwash valve.
Is this a full kit or a single fitting?
It is supplied as the union adapter kit, part 274426Z, rather than as an individual nut or tailpiece.
Why replace a union adapter?
Union threads strip, nuts crack under over tightening, and the seating face gets scored. Any of those turns into a leak at the pad that no amount of retightening will stop, and a fresh kit is the fix.
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