Sta-Rite 25021-0003 air bleed tube for System 3 cartridge filtersSta-Rite System 3 Cartridge Filter Air Bleed Tube, 25021-0003 In stock$2499
Sta-Rite 25021-0003 air bleed tube for System 3 cartridge filters
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Sta-Rite System 3 Cartridge Filter Air Bleed Tube, 25021-0003

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$2499
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Quick overview

  • Genuine Sta-Rite Factory part 25021-0003, not a cut length of generic tube.
  • System 3 cartridge filters Listed for the S7M120, S8M150, S7M400 and S8M500 filters.
  • Air relief path The bleed tube carries trapped air from inside the tank to the relief valve.
  • Fixes stubborn air A cracked or missing bleed tube is a common reason a filter will not purge air on start up.
  • Filter part Catalogued by Sta-Rite as a pool filter part.
  • Check while the lid is off Inspect the lid o-ring and the relief valve at the same time, since they share the same job.
Full description and specifications ↓

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Product details

The Sta-Rite 25021-0003 is the air bleed tube for System 3 cartridge filters, covering the S7M120, S8M150, S7M400 and S8M500 models. It is the genuine Sta-Rite part.

What it does

Air collects at the top of a filter tank every time the system is opened or the pump loses prime. The bleed tube is the path that air takes from inside the tank out through the relief valve. Without it, the air stays where it is and the filter runs with a pocket of air that hurts flow and makes the tank noisy.

Fitting

The tube is reached with the filter lid off, which is the right moment to look over the lid o-ring and the relief valve as well. All three work together, and replacing only one of a set of tired parts often means opening the filter again a month later.

Specifications
Brand Sta-Rite
Manufacturer part number 25021-0003
UPC 788379828950
Part type Pool Filter Part
Type Air bleed tube
Fits Sta-Rite System 3 cartridge filters S7M120, S8M150, S7M400, S8M500
Shipping weight 0.1 lb
Ships Parcel

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Questions and answers

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

Which filters does this fit?
The Sta-Rite System 3 cartridge filters, models S7M120, S8M150, S7M400 and S8M500.
What does the air bleed tube do?
It runs from inside the tank up to the air relief, giving trapped air a path out when the filter is started.
Why will my filter not purge air?
A bleed tube that is cracked, broken or missing will not carry air to the relief valve. Check the tube, then the relief valve itself and the lid seal.
Is it a genuine part?
Yes. It is Sta-Rite part number 25021-0003.
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