
Quick overview
- Genuine Jandy The factory air relief valve, part R0557200.
- For CS series filters The air relief valve used on the Jandy CS cartridge filter.
- Bleeds trapped air Opening the valve lets air escape so the tank fills with water and the gauge reads true.
- Used on every service Air comes out through this valve each time the filter is opened for a cartridge clean.
- A common weep point The relief valve is one of the first parts to drip as its seal ages and the plastic weathers.
- Direct swap Goes in where the original valve came out, with no other change to the filter.
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Product details
Jandy R0557200 is the air relief valve for the CS series cartridge filter. It is the genuine Jandy part.
What it is for
Every time a filter is opened, air gets into the tank. The relief valve is how that air comes back out. Open it on startup and hold it open until water rather than air comes through, and the tank is full. Skip that step and the gauge reads low, the filter runs on a pocket of compressed air, and pressure can build in a way nobody wants near a plastic tank.
When it needs replacing
Relief valves live on top of the filter in full sun and get operated by hand several times a season. The seal hardens, the stem seizes or the body cracks, and it starts to drip whenever the pump runs. Tightening a weeping relief valve does not fix it and usually splits the body.
Fitment
Listed for the Jandy CS series cartridge filter. It replaces the original valve directly with no other changes to the filter.
| Brand | Jandy |
|---|---|
| Manufacturer part number | R0557200 |
| UPC | 052337025119 |
| Type | Air relief valve |
| Function | Manual air bleed |
| Fits | Jandy CS series cartridge filters |
| Part type | Cartridge filter part |
| Shipping weight | 0.05 lb |
| Ships | Parcel |
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