Pentair 71427 H-Series valve body o-ringPentair H-Series Valve Body O-Ring, 71427 In stock$1499
Pentair 71427 H-Series valve body o-ring
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Pentair H-Series Valve Body O-Ring, 71427

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$1499
In stock
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Quick overview

  • Seals the valve body The o-ring that keeps water inside the valve body instead of weeping past it.
  • H-Series and M-Series Listed for the American Products 2 in. H and M Series multiport valves.
  • SM and SMBW 2000 Also serves the Purex 2000 Series backwash valves used on SM and SMBW filters.
  • Cheap part, expensive symptom A hardened o-ring here reads as a leaking valve and sends people shopping for a whole multiport.
  • Replace on every teardown Once a valve is apart, the body o-ring is the piece you do not put back used.
  • Genuine Pentair Factory part 71427.
Full description and specifications ↓

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Product details

The Pentair 71427 is the H-Series valve body o-ring. It is the genuine factory seal for the valve body, and it turns up on several older valve families.

Where it is used

Pentair lists it for the American Products 2 in. H and M Series multiport valves, and for the Purex 2000 Series backwash valves fitted to SM and SMBW filters. It also appears in the QuietFlo and Aquatron pump parts listings.

Why it fails

O-rings do not wear out so much as they harden. Years of heat, chlorine and compression take the spring out of the rubber, it takes a permanent set, and the seal starts weeping at the body. The leak looks like a failed valve, which is how a five dollar part ends up costing someone a whole multiport.

While you are in there

The union o-ring and the rotor shaft o-ring are separate parts. If the valve is coming apart anyway, it is worth having all three on hand rather than opening it twice.

Specifications
Brand Pentair
Manufacturer part number 71427
UPC 788379695552
Part type Pool pump part
Type Valve body o-ring
Fits American Products 2 in. H and M Series multiport valves; Purex SM and SMBW 2000 Series backwash valves
Also listed under Pentair QuietFlo and Aquatron pump parts
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 valves take this o-ring?
The American Products 2 in. H and M Series multiport valves, and the Purex 2000 Series backwash valves fitted to SM and SMBW filters.
Where does it sit?
It is the body o-ring, the seal at the valve body rather than the union or the rotor shaft.
Should I replace it during a rebuild?
Yes. O-rings take a set and harden with age, so once the valve is open it costs almost nothing to put a new one in and saves a second teardown.
Is it the same as the union o-ring?
No. The union o-ring and the rotor shaft o-ring are separate parts on these valves.
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