Hayward SX144DA Sand Filter Lateral Assembly With Center Pipe - For S144T

What This Part Is Used For
The Hayward SX144DA is a lateral assembly with center pipe used inside the Hayward S144T sand filter as listed. It forms the internal underdrain that collects filtered water and keeps sand media inside the filter tank. This assembly sits at the bottom of the filter and is accessed during sand replacement and internal service.

Why This Part Matters
Cracked laterals are a common reason sand returns to the pool through the returns and the water won’t clear up. A damaged underdrain also reduces backwash performance and can create channeling through the media. Replacing the correct assembly restores proper flow through the sand bed and keeps media where it belongs. This repair is typically done during a sand change when the filter is already opened.

Key Features and Specifications

• Manufacturer part number: SX144DA
• Sand filter lateral assembly with center pipe
• Specified for Hayward S144T sand filter
• Internal underdrain component that helps retain sand media
• Installs at the bottom of the filter tank

Installation and Fitment Guidance
Depressurize the filter fully and remove sand carefully to avoid damaging internal parts. Verify the center pipe is seated correctly and laterals are level before refilling media and reassembling. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward builds an integrated lineup of pool equipment including pumps, filters, heaters, automation, cleaners, chlorination systems, and service parts. Their sand filters are widely installed and supported with internal replacement components to extend equipment life. This compatibility helps technicians restore filtration performance without full equipment replacement. Hayward replacement parts are widely supported across residential pool service.

Common Service Context
Techs typically replace this assembly when a pool starts returning sand after backwashing or when laterals are found cracked during a sand change. It is often identified by gritty debris at the returns and reduced water clarity.