Theory of Gun Operation
12
3A9099A Operation, Repair, Parts
Theory of Gun Operation
Gun Triggered (Fluid Spraying)
Mix chamber (13) moves back, shutting off purge air
flow. Impingement ports (IP) align with fluid ports of side
seals (18c), allowing fluid to flow through mix chamber
nozzle (N).
Key
NOTE:
Flow paths are not shown to scale.
Gun Detriggered (Air Purging)
Mix chamber (13) moves forward, shutting off fluid flow.
Impingement ports (IP) open to air chamber (AC),
allowing purge air to flow through mix chamber nozzle (N).
Key
NOTE:
Flow paths are not shown to scale.
Purge Air
Fluid
Cleanoff Air
Grease
13
IP
10
N
18c
Purge Air
Fluid
Cleanoff Air
Grease
13
IP
AC
N
7