Hayward DEX2420ATC Lower Filter Body with Clamp System (Tank Bottom Assembly)Pro-Grid DE2420
The Hayward DEX2420ATC is a genuine OEM lower filter body (tank bottom) with clamp system for the
Hayward Pro-Grid vertical grid D.E. filter DE2420. This is the lower tank assembly used when the original tank bottom is
cracked, warped, leaking at the seam, or damaged from freezing, overtightening, or long-term wear.
Fits / Compatibility
- Hayward Pro-Grid vertical grid D.E. filter: DE2420 (24 sq ft)
- Pool Type: In-Ground
Whats Included
- Lower filter body / tank bottom
- Clamp system to secure the upper and lower tank halves
Note: Some versions of the with clamp system package may be bundled as a complete clamp kit (clamp ring + metal-reinforced
seal + nut/bolt hardware). Always confirm whats included with your specific listing if you need clamp hardware and seal components.
Key Details
- Part Number: DEX2420ATC
- GTIN/UPC: 610377106917
- Replacement Part Warranty (typical): 6 months (parts only)
Common Reasons to Replace
- Cracks or leaks in the lower tank body
- Seam leaks that persist after seal replacement due to damaged tank surfaces
- Freeze damage or physical impact damage
- Warped tank flange that prevents even clamp sealing
Installation Notes
- Shut off the pump and fully relieve filter pressure at the air relief before loosening the clamp.
- Clean the tank flange and sealing surfaces thoroughlygrit is a common cause of seam leaks.
- Inspect the tank seal and replace it if flattened, nicked, or stiff; seat it evenly before clamping.
- Tighten the clamp uniformly per the filters instructions and re-check for seepage after restart.
Related Products
- Hayward DEX2420ATC (search)
- Hayward Pro-Grid DE2420 Parts (search)
- Hayward DEX2421JKIT Clamp System Kit (search)
- Hayward DEX2421J2 Clamp Nut & Bolt Kit (search)
- Hayward Metal-Reinforced Tank Seal (search)
- Silicone O-Ring & Gasket Lubricant (search)
Maintenance Tips
- Never loosen a clamp while the filter is pressurizedalways shut off the pump and bleed air first.
- Keep the clamp band and tank flanges clean; debris under the seal can cause seam leaks.
- Lightly lubricate the tank seal with silicone-based lube to help prevent pinching and improve resealing.
- In freeze-prone areas, winterize properly by draining the filter completely to help prevent tank cracking.
