This is an Iwata 93843530 air valve seat for LS400 and LPH400 spray guns. If you experience air leaking behind the trigger, this piece is most likely the culprit.
Anest Iwata 93001640 Air Valve Seat ASSY for WIDER1 KIWAMI-1 WIDER4 KIWAMI4
Anest Iwata Air valve seat assy 93843530 WS-400 LS-400 W-400 LPH-400 and more
Iwata Air Valve 93591530
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