Intake Valve Body HW-411
The HW-411 Intake Valve Body does not include the HW-26 Spring or SS-1552 Steel Ball installed. The spring and ball must be installed on this part in order for the guns to work. The HW-411A Intake Valve Assembly includes the HW-26 Spring and SS-1552 Steel Ball. This threads onto the HW-49 (LT). Ref. #20 on the diagram.