Hayward Universal Heater Hardware Kit (FDXLHDW1930) topsideparts A valve like this is

A valve like this is useful because it manages multiple filter modes from one central point while also supporting a more specific mounting configuration

Helps with cleaner installation and removal

When the spa relies on a bromine-generator approach

Raypak thermostat kit

Hayward Universal Heater Hardware Kit (FDXLHDW1930) topsideparts A valve like this isThe Hayward heater hardware kit is designed for compatible Universal heater applications where a grouped set of replacement fasteners and related hardware is needed. A kit like this is useful because it helps simplify service work while restoring the proper fastening support at key assembly points throughout the heater. This replacement is especially useful when the original hardware is corroded, stripped, bent, missing, or too worn to reuse