Hayward Universal Vacuum Switch (FDXLBVS1930) watercare and this Darlly cartridge is

and this Darlly cartridge is designed for compatible applications referencing FC-2970

This Darlly cartridge is a strong replacement choice when the original 125 square foot element with these measurements needs a direct-compatible renewal

Useful for DE filter repair and rebuild work

Useful for accurate rebuild and replacement work

and AG tool applications

Hayward Universal Vacuum Switch (FDXLBVS1930) watercare and this Darlly cartridge isThis vacuum switch is designed for compatible Hayward Universal heater systems and supports the control logic that verifies airflow or venting conditions. It is an important electrical safety and diagnostic component within the heater operating sequence. When a heater shows ignition or pressure related faults, the vacuum switch may be part of the troubleshooting path. Replacing a failed switch with the proper Hayward component helps maintain the