Waterway 805-0207 air relief valve o-ring for Clearwater II filtersWaterway Air Relief Valve O-Ring, 805-0207 In stock$799
Waterway 805-0207 air relief valve o-ring for Clearwater II filters
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Waterway Air Relief Valve O-Ring, 805-0207

Ask a questionMPN 805-0207
$799
In stock
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Quick overview

  • Waterway part The factory o-ring for the filter air relief valve, not a hardware store substitute.
  • Clearwater II filters Used on the Waterway Clearwater II cartridge and DE filter air relief assemblies.
  • Proclean cartridge filters The same o-ring is listed in the Waterway Proclean cartridge filter parts group.
  • Stops the drip A hardened or flattened o-ring is the usual reason a relief valve weeps after you bleed the filter.
  • Cheap insurance Worth replacing any time the relief plug is out of the tank for service.
  • Two part numbers Carried as 805-0207 and referenced in Waterway literature as 602-0201.
Full description and specifications ↓

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Product details

This is the Waterway o-ring for the air relief valve on Clearwater II cartridge filters, Clearwater II DE filters and Proclean cartridge filters. It is the small seal between the relief plug and the filter head.

Why it fails

The relief valve is opened and closed every time the filter is bled, so its o-ring works harder than most seals on the tank. Chlorinated water and sun turn it hard, then it takes a set and stops sealing. The symptom is a valve that drips or weeps after bleeding, and it is often mistaken for a cracked plug.

Part numbers

The o-ring is stocked as 805-0207 and is also referenced as 602-0201 in Waterway parts listings. Both refer to this seal. Lubricate it lightly with a silicone based lubricant on installation, and never use a petroleum grease.

Specifications
Brand Waterway
Manufacturer part number 805-0207
Also referenced as 602-0201
UPC 806105249364
Type Air relief valve o-ring
Part type Pool filter part
Fits Waterway Clearwater II cartridge filters, Clearwater II DE filters, Proclean cartridge filters
Shipping weight 0.02 lb
Ships Parcel

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Questions and answers

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

Which part number is correct, 805-0207 or 602-0201?
Both appear on this o-ring. The stock number is 805-0207 and Waterway literature also references it as 602-0201. If you are matching an old part, either number points here.
Which filters does it fit?
Waterway Clearwater II cartridge filters, Clearwater II DE filters and Proclean cartridge filters.
Is this the whole air relief valve?
No. This is the o-ring alone. The air relief plug is a separate Waterway part.
When should I replace it?
Any time the relief valve seeps after you bleed air, or whenever the plug is out for filter service. Rubber that has gone hard, flat or cracked will not seal again.
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