Central Body - Graco G-3S Instructions Manual

Central Body

L
F . 2
IG
Key:
H Central body (with lance)
J Packing set material inlet
K Packing set material return
L Gasket
M Locating pins
N Valve needle guide
O Valve needle packing set
The central body connects material, air and electrical
signals from the solenoid valves. Two parallel channels
supply material up to the nozzle head. A third channel is
provided for the material return flow back to the swivel
housing.
A needle guide (N) is located at the front end of the cen-
tral body (H) to align the needle valves with the valve
seats in the nozzle head. The nozzle head gasket (L)
seals between the material supply and the nozzle head
(D). The two nozzle head locating pins (M) ensure that
the nozzle head is always mounted in the correct posi-
tion. The valve needles packing set (O) seals off the
valve needles from material and air pressure.
3A5591D
N
M
H
K
O
Channel arrangements in the central body:
Blue: Product in
Red: Return (if unit is equipped with circulation)
Green: Signals from the solenoid valves
F . 3: Product Flow
IG
Component Identification
J
J
Air Signals
Product In
Product In
Return
7