Waterway D.E. Manifold Assembly W/Air Relief | 550-4200
Waterway
SKU: WWP5504200
Waterway 550-4200 D.E. Filter Top Manifold Assembly with Air Relief
The Waterway 550-4200 is a replacement top manifold assembly with an integrated air relief for select Waterway Crystal Water D.E. pool filters. The top manifold directs filtered water flow through the grid assembly, while the air relief helps purge trapped air from the filter tank for smoother start-ups and more consistent circulation.
Key Features
- Replacement top manifold for D.E. grid-style filtration systems
- Includes air relief assembly to help release trapped air during priming and operation
- Restores proper internal water routing through the grid pack
- Helps address issues like air accumulation, reduced flow, or poor filtration caused by a cracked/warped manifold
- OEM-style fit for compatible Waterway Crystal Water D.E. filter configurations
Compatibility
- For use with select Waterway Crystal Water D.E. filters
- Match by part number 550-4200 and confirm the manifold style/air relief position against your existing assembly
- Common cross references used in catalogs: 4742-97 and 550-4200B (catalog/packaging references may vary)
When to Replace
- Visible cracks, warping, or broken standpipe/manifold connections
- D.E. returning to the pool after backwash/cleaning (after verifying grids are intact)
- Persistent air in the system or difficulty bleeding air from the filter
- Reduced flow or short filter cycles caused by internal bypass/leaks
Installation Notes
- Turn off power, relieve tank pressure, and drain the filter before opening.
- Inspect the grid pack, standpipe connection, and tank O-ring while the filter is open.
- After reassembly, restart the system and use the air relief to purge air until a steady stream of water flows.
Related Products
- Waterway Crystal Water D.E. Replacement Grids
- D.E. Filter Air Relief Valve / Assemblies
- Filter Tank O-Rings & Seal Kits
- Pool Filter Pressure Gauges
- D.E. Powder (Pool-Grade)
Maintenance Tips
- Bleed air from the filter after servicing and any time the system has been opened.
- Clean the grid pack when pressure rises about 8–10 PSI above your clean baseline.
- Inspect the manifold and grid tops during cleanings—small cracks can cause internal bypass and poor filtration.
- Keep the tank O-ring clean and lightly lubricated to prevent leaks and make future service easier.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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