Hayward Clamp Assembly w/ Hardware | ECX4000C
Hayward Products
SKU: ECX4000C
Hayward ECX4000C Clamp Assembly with Hardware for Perflex® Extended-Cycle D.E. Filters
The Hayward ECX4000C is an OEM clamp assembly with hardware used to secure the filter head (top) to the tank body on compatible Hayward Perflex extended-cycle D.E. filters. If your clamp is cracked, warped, stripped, or won’t tighten evenly, replacing the clamp helps restore a secure seal and safer, more reliable filter operation.
Fits / Compatibility
- Hayward Perflex extended-cycle D.E. filter models including: EC30, EC40, EC40AC, and EC40C90 series
- Also commonly referenced for Perflex extended-cycle filter model group I_PFPPTS
What’s Included
- Clamp assembly (band)
- Hardware for tightening and securing the clamp (commonly includes bolts/nuts and related hardware)
What It Fixes
- Clamp is cracked, split, sun-brittle, or missing hardware
- Filter head won’t seat evenly or clamp won’t hold tension
- Seepage at the tank/head seam caused by uneven clamping (after confirming the tank O-ring is in good shape)
Specs (Quick Reference)
- Part Number: ECX4000C
- Part Type: Filter Parts (Clamp Assy w/ Hardware)
- Pool Type: In-Ground
- GTIN/UPC: 610377748650
- Replacement Part Warranty: 6 months (parts only)
- Approx. Shipping Weight: 3.7 lb
Installation Notes
- Turn off the pump and relieve filter pressure before loosening any clamp.
- Clean the clamp seat area and sealing surfaces so the head sits squarely.
- Tighten evenly—uneven tension can pinch the O-ring and cause leaks.
- If you are servicing the clamp, inspect the tank O-ring and replace it if flattened, stretched, or nicked.
Related Products
- Hayward ECX4000C (search)
- Hayward Perflex EC40AC Filter Parts (search)
- Hayward Perflex EC50AC Filter Parts (search)
- Hayward ECX5000G Diaphragm Gasket (search)
- Hayward ECX1322A Vent Valve (search)
- D.E. Filter Powder (search)
Maintenance Tips
- Always depressurize the filter before opening—never loosen a clamp under pressure.
- Keep the clamp band and sealing surfaces clean; grit can prevent even clamping and cause leaks.
- Lightly lubricate large O-rings with silicone-based pool lubricant to reduce pinching and improve sealing.
- If leaks persist after replacing the clamp, inspect the head and tank flange for warping or cracks.
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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