This is the brass air valve found behind the trigger.
Anest Iwata Air valve seat assy 93843530 WS-400 LS-400 W-400 LPH-400 and more
Iwata Air Valve Shaft 93935430
ANEST IWATA Air gauge for spray gun air regulator Air adjustment valve ES
ANEST IWATA Air gauge for spray gun air regulator pressure Air adjustment valve
ANEST IWATA Air gauge 2pcs for spray gun regulator pressure Air adjustment valve
