Raypak 53/53A/55A/151/153/155A/183A Bulb Well (007211F) cmp An adapter like this is

An adapter like this is useful because it helps create the intended connection between the heater and the vent path in the supported outdoor configuration

and this Jacuzzi Cygnet 0

Uses the MTJ-770 reference

That broader update path often leads to a cleaner and more confidence-inspiring result once everything is installed

Raypak 53/53A/55A/151/153/155A/183A Bulb Well (007211F) cmp An adapter like this isThe Raypak bulb well is designed for compatible 53, 53A, 55A, 151, 153, 155A, and 183A heater applications where the supported sensing bulb needs the correct mounting and protection point. A bulb well is useful because it helps position the sensing element properly while shielding it within the heater assembly for dependable thermal response. This replacement is especially useful when the original well is corroded, leaking, damaged, or no longer