Air In (close) pushes needle plate down,which seats the needle tip in the needle seat,stopping fluid flow.Spring assists in the close. > Air In (open) pushes needle plate up,which lifts needle tip out of the needle seat, allowing fluid to flow in. ғORingsԓORingSpringNeedle PlatePacking NutPacking > I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1-800-433-2115 www.fishmancorp.com Adjustable Stop Limits how high the needle plate can rise,therefore, limiting how far the needle tip comes out of the needle seat.This limits fluid flow. > Fluid ChamberNeedle SeatAir Atomizing...