8
1
2
3
4
5
6
8
9
10
11
12
13
7
8.
MAINTENANCE AND CLEANING:
Normally, purging the valve with appropriate flush material or solvent after use is sufficient for
cleaning. However some material may cause a buildup in the valve chamber, in this case periodic and
thorough cleaning will be required.
CAUTION: Make sure the fluid pressure is released before disassemble the valve.
1)
Release fluid pressure
2)
Disconnect fluid line
3)
Disconnect valve air line
4)
Remove end cap (1)
5)
Pull out Piston/valve spool assembly (4)
6)
Remove the spring from air cylinder (2)
7)
Remove socket head cap screws (10)
8)
Separate material outlet block (9), material inlet block (6) and air cylinder (3). Clean
these parts if necessary
9)
Replace o-rings (13) on the spool shaft, material outlet block (8) and air cylinder (12) if
worn or damaged.
10)
Remove lower seals (7) out of the outlet block and upper seal (5) out of the air cylinder
using a small screw driver
11)
Clean seal seats and carefully install new seals. It is important that seals should be
replaced in the same orientation to prevent leaks and accelerated wear.
12)
Lubricate O-rings with “Parker-o-lube” or similar grease
13)
Assemble Material outlet block, Material inlet block and Air cylinder.
14)
Thread Socket head cap screws into assembled valve. Tighten uniformly to ensure
proper valve alignment.
15)
Insert the spring back into the air cylinder.
16)
Insert Piston/valve spool into valve body.
17)
Install air fitting to end cap.
18)
Install End cap to air cylinder. (
HAND TIGHTEN ONLY
)
Figure 5.0
