Pentair 271104 five spoke spider gasket, 5-3/16 in outside diameterPentair Valve Gasket, 5-3/16" OD, 271104 In stock$2599
Pentair 271104 five spoke spider gasket, 5-3/16 in outside diameter

Pentair Valve Gasket, 5-3/16" OD, 271104

Ask a questionMPN 271104
$2599
In stock

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Quick overview

  • Five spoke spider gasket The diverter seal that separates the ports inside a top mount multiport valve.
  • Measured, not guessed 5-3/16 in outside diameter, 3/4 in center hole, 1/4 in thick, so it can be checked against the old one.
  • Stops port to port bypass A worn spider gasket lets water cross between ports, which is why a filter keeps sending sand or DE back to the pool.
  • Genuine Pentair Factory part 271104, molded to the original profile.
  • Listed for top mount valves Referenced for Pentair top mount multiport valve bodies including models 501131, 501130 and 501231.
  • The usual valve repair Replacing the spider gasket is the first thing to try when a multiport leaks between settings.
Full description and specifications ↓

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Product details

The Pentair 271104 is the five spoke spider gasket for a top mount multiport valve. It measures 5-3/16 in across the outside, has a 3/4 in center hole and is 1/4 in thick.

What it seals

Inside a multiport valve, a rotating diverter presses down onto this gasket. The spokes of the gasket divide the valve body into separate ports, and every setting on the handle, filter, backwash, rinse, waste, works only because those ports stay isolated from one another. The gasket is the seal doing that job.

When it has failed

Rubber hardens, takes a set, or tears at a spoke. Once it does, water crosses between ports inside the valve, and the visible symptoms follow: sand or DE returning to the pool, water running to waste while the valve is set to filter, or pressure that will not build. Replacing the spider gasket is the first repair to try in all of those cases.

Confirm the fit

The source lists this gasket for a 1-1/2 in multiport valve and also files it with six position top mount valve parts covering models 501131, 501130 and 501231. The three dimensions above are the reliable check, so measure the old gasket before ordering.

Specifications
Brand Pentair
Manufacturer part number 271104
UPC 788379693329
Type 5 spoke spider gasket, diverter gasket
Outside diameter 5-3/16 in
Center hole inside diameter 3/4 in
Thickness 1/4 in
Listed for 1-1/2 in multiport valve; also listed with 6 position top mount valve models 501131, 501130, 501231
Part type Filter valve part
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.

What does a spider gasket do?
It sits under the rotating diverter in a multiport valve and seals each port from its neighbors. Every position on the valve handle depends on that seal to send water only where it is supposed to go.
How do I confirm this is the right gasket?
Measure the old one. This gasket is 5-3/16 in across the outside, has a 3/4 in center hole and is 1/4 in thick. If those three numbers match, it is the right part.
Which valves is it listed for?
The source lists it as the gasket for a 1-1/2 in multiport valve, and also files it with six position top mount valve parts for models 501131, 501130 and 501231. Measure before ordering if your valve is not one of those.
Why is sand coming back into my pool through the multiport?
A hardened or torn spider gasket is a common cause. When the seal between ports fails, water crosses inside the valve body and carries media with it.
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