Waterway ClearWater II Cartridge Filter Replacement Part 550-7500
Waterway
SKU: 550-7500
Waterway 550-7500 ClearWater II Filter Locknut Assembly
Waterway 550-7500 is a replacement filter-locknut assembly for specified ClearWater II filters. It is the retaining assembly for the matching filter housing, rather than a filter cartridge.
Confirm the locknut number and locking arrangement with the filter’s parts diagram. Inspect the latch and mating housing before reassembly so the filter can be secured according to its instructions.
Product Features
- Waterway filter locknut assembly
- Part number / listing SKU: 550-7500
- Product Line: ClearWater II
- Component: Filter-locknut assembly
Product Details
| Brand | Waterway |
| Part Number / SKU | 550-7500 |
| Product Type | Filter locknut assembly |
| Product Line | ClearWater II |
| Component | Filter-locknut assembly |
Compatibility
- ClearWater II filter assemblies specifying 550-7500
- Confirm the exact model and part number before ordering.
Common Uses
- Replacing a damaged locknut
- Servicing the filter-retaining assembly
Installation Notes
- Switch off the pump, isolate the system, and fully release filter pressure before opening it.
- Follow the exact filter manual for component positioning and locking/clamping procedures.
- Check seals and retainers, then follow the prescribed air-purging and startup procedure.
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Check each related listing for its own fit and specifications before selecting additional products.
Maintenance Tips
- Inspect sealing surfaces and locking components during routine service.
- Maintain the filter media and monitor the pressure gauge according to the manual.
- Never operate a filter with damaged pressure-vessel or retaining components.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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