ANDERSON GREENWOOD
4020HP PRESSURE AND VACUUM RELIEF VALVE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
FIGURE 3 (See Note)
VLP/VP Vacuum Pallet 2" (50 mm), 3" (75 mm) and 4" (100 mm)
FIGURE 4
VLP/VP Vacuum Pallet 6" (150 mm), 8" (200 mm), 10" (250 mm) and 12" (300 mm)
PALLET (1)
PALLET (1)
PALLET DISK (3)
BACKING DISK (3)
DIAPHRAGM (4)
PALLET DISK (5)
DIAPHRAGM (2)
SPACER DISK (2)
7.4 Pressure Pallet (See Figures 3, 4 and 5)
NOTE
The vacuum pallet construction will depend on
size and vacuum setting. The VLP and LP have
a similar construction whereas the HP has a
significant disc for strength. Refer to Table 2 for
vacuum pallet ranges.
VLP/VP Vacuum Pallet 2" (50 mm), 3" (75 mm),
and 4" (100 mm)
Remove nut [5], washer where used [4], to
release stem [6] from assembly. Separate
pallet disk [3], diaphragm [2], pallet [1] and any
weights taking care to identify weights removed
to help reassembly.
VLP/VP VACUUM PALLET 6" (150 mm),
8" (200 mm), 10" (250 mm) and 12" (300 mm)
Remove nut [7], washer where used [6], to
release stem [8] from assembly. Separate
pallet disk [5], diaphragm [4], backing disk [3],
spacer disk [2], pallet [1] and any weights
taking care to identify weights removed to
help reassembly.
NOTE
Figure 3
Washer item [4] not fitted to 2" (50 mm) and
3" (75 mm) sizes.
7
1
3
8
5
6
7
2
3
4
1
4
5
2
6
