ES Valve
Instruction Manual
December 2008
9
Figure 5. Detail of PTFE/Composition Packing Arrangements
for Plain and Extension Bonnets
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER (KEY 13)
LANTERN RING
(KEY 8)
PACKING BOX
RING (KEY 11)
PACKING RING
(KEY 7)
9.5 mm
(3/8 INCH)
STEM
12.7 mm
(1/2 INCH)
STEM
19.1, 25.4, OR
31.8 mm
(3/4, 1, OR
1-1/4 INCH)
STEM
TYPICAL (DOUBLE) ARRANGEMENTS
12A8188-A
12A7815-A
12A8173-A
A2619-2 / IL
of the nuts reaches the minimum recommended
torque shown in table 4. Then, tighten the remaining
flange nuts until the packing flange is level and at a
90-degree angle to the valve stem.
15. Mount the actuator on the valve assembly and
reconnect the actuator and valve stem according to
the procedure in the appropriate actuator instruction
manual.
Trim Maintenance
WARNING
Refer to the WARNING at the
beginning of the Maintenance section
in this instruction manual.
CAUTION
In the following applicable procedures,
to avoid damaging parts, do not grip
the bellows shroud or other parts of
the stem/bellows assembly. Grip only
the flat areas on the stem where it
extends out of the top of the bellows
shroud.
Except where indicated, key numbers in this section
are referenced in figure 13 for standard NPS 1/2
GRAPHITE
FILAMENT
PACKING RING
(KEY 7)
GRAPHITE
RIBBON
PACKING RING
(KEY 7)
GRAPHITE
FILAMENT
PACKING RING
(KEY 7)
Figure 6. Detail of Graphite Ribbon/Filament Packing
for Plain and Extension Bonnets
PACKING
FOLLOWER
(KEY 13)
LANTERN
RING (KEY 8)
PACKING BOX
RING (KEY 11)
1
12.7 mm
(1/2 INCH)
STEM
SINGLE ARRANGEMENTS
NOTE:
0.102 mm (0.004 INCH) THICK SACRIFICIAL ZINC WASHERS;
USE ONLY ONE BELOW EACH GRAPHITE RIBBON RING.
A5864-1 / IL
1
GRAPHITE
RIBBON
PACKING RING
(KEY 7)
1
1
9.5 mm
(3/8 INCH)
STEM
19.1, 25.4, & 31.8 mm
(3/4, 1 & 1-1/4 INCH)
STEM
14A3411-A
13A9775-B
13A9776-B
PACKING
FOLLOWER
(KEY 13)
LANTERN
RING (KEY 8)
PACKING BOX
RING (KEY 11)
1
12.7 mm
(1/2 INCH)
STEM
DOUBLE ARRANGEMENTS
1
1
9.5 mm
(3/8 INCH)
STEM
19.1, 25.4, & 31.8 mm
(3/4, 1 & 1-1/4 INCH)
STEM
14A2153-B
14A1849-B
14A1780-B
1
through 6 constructions, figure 14 for NPS 8 ES
valves, figure 15 for Whisper Trim III cage detail, and
figure 16 for WhisperFlo trim.
Disassembly
1. Remove the actuator and the bonnet according to
steps 1 through 6 of the Replacing Packing
procedure of the Maintenance section.
