PresAir Trol Threaded Stem Pressure Switch [21A] [1/8" MPT] [SPDT] (PM11120A) invensys heavily worn

heavily worn

or been removed during repair work

or no longer offers reliable automatic and manual control

A correct escutcheon helps the seat look finished and intentional instead of slightly incomplete after a repair

Designed for compatible 2 inch Hayward plumbing

PresAir Trol Threaded Stem Pressure Switch [21A] [1/8" MPT] [SPDT] (PM11120A) invensys heavily wornThe PresAir Trol threaded stem pressure switch is designed for compatible systems that use a 1 8 inch MPT connection and require an SPDT pressure activated switch rated at 21 amps. Pressure switches like this play an important role in helping the system respond properly to operating conditions before connected equipment is allowed to run as intended. This replacement is especially useful when the original switch has become inaccurate, intermittent, or