Hayward Standpipe and Underdrain Assembly | VLX4001A Uxmal GLI 99-55-4395050 – Commercial Reel

GLI 99-55-4395050 – Commercial Reel Strap Kit – Twister

or unexplained communication loss between internal components

it might be found near return lines or filter housings for better operational clarity

blending perfectly with your patio heater and outdoor décor

Hayward Standpipe and Underdrain Assembly | VLX4001A Uxmal GLI 99-55-4395050 – Commercial ReelWhat This Part Is Used For The Hayward VLX4001A is a standpipe and underdrain assembly used inside compatible Hayward VL Series sand filters. It manages internal water distribution through the sand bed and supports proper filtration and backwashing. This assembly lives inside the filter tank under the multiport valve connection. Why This Part Matters If the internal underdrain components are cracked or out of position, the filter can bypass sand and