Instruction Manual

Instruction Manual
D100400X012
EWN and EW-1 Valves
July 2014
7
Figure 3. PTFE V-Ring Packing Arrangements
12A7839-A
B1428
12A8178-A
A2628
B1429
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
WASHER
(KEY 10)
SPRING
(KEY 8)
PACKING BOX
RING (KEY 11)
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
PACKING BOX
RING (KEY 11)
SPACER (KEY 8)
FEMALE
ADAPTOR
PACKING
RING
MALE
ADAPTOR
FEMALE
ADAPTOR
PACKING
RING
MALE
ADAPTOR
LOWER
WIPER
LOWER
WIPER
PACKING
SET (KEY 6)
FOR 316 OR 17-4PH SST
METAL PACKING BOX PARTS
FOR ALL OTHER METAL PACKING
BOX PART MATERIALS
SINGLE ARRANGEMENT
UPPER WIPER
(KEY 12)
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
PACKING FOLLOWER
(KEY 13)
MALE
ADAPTOR (KEY 31)
MALE
ADAPTOR (KEY 31)
FEMALE
ADAPTOR (KEY 32)
FEMALE
ADAPTOR (KEY 32)
PACKING RING (KEY 7)
PACKING RING
(KEY 7)
PACKING BOX
RING (KEY 11)
PACKING BOX
RING (KEY 11)
LOWER
WIPER
(KEY 30)
LOWER WIPER (KEY 30)
LANTERN
RING (KEY 8)
LANTERN
RING (KEY 8)
DOUBLE ARRANGEMENT
LEAK-OFF ARRANGEMENT FOR 19.1 mm
(3/4 IN.) STEM ONLY
ASSEMBLY 1
(POSITIVE
PRESSURES)
ASSEMBLY 2
(VACUUM)
ASSEMBLY 3
(POSITIVE
PRESSURES &
VACUUM)
Replacing Packing
WARNING
Observe the warning at the start of the Maintenance section.
1. Disconnect the operating lines from the actuator and any leak-off piping from the bonnet. Disconnect the stem
connector, and then remove the actuator from the valve by unscrewing the yoke locknut (key 15, figure 6) or the
hex nuts (key 26, figure 6).