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ES Valve
Instruction Manual
December 2008
7
Figure 3. PTFE V-Ring Packing Arrangements for Plain and Extension Bonnets
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
WASHER
(KEY 10)
SPRING
(KEY 8)
PACKING BOX
RING (KEY 11)
FEMALE
ADAPTOR
PACKING RING
MALE
ADAPTOR
LOWER WIPER
FEMALE
ADAPTOR
PACKING RING
MALE
ADAPTOR
LOWER WIPER
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
SPACER
(KEY 8)
PACKING BOX
RING (KEY 11)
1
1
FOR S31600 OR S17400
METAL PACKING BOX PARTS
FOR ALL OTHER METAL PACKING
BOX PART MATERIALS
SINGLE ARRANGEMENTS
NOTE:
PART OF PACKING SET (KEY 6) (SEE TABLE IN PARTS LIST).
12A7837−A
B2427
1
1
1
1
1
1
1
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER (KEY 13)
LANTERN RING
(KEY 8)
PACKING BOX
RING (KEY 11)
MALE ADAPTOR
(KEY 31)
PACKING RING
(KEY 7)
FEMALE ADAPTOR
(KEY 32)
LOWER WIPER
(KEY 30)
ASSEMBLY 1
(POSITIVE
PRESSURES)
ASSEMBLY 2
(VACUUM)
ASSEMBLY 3
(POSITIVE
PRESSURES
& VACUUM)
ASSEMBLY 1
(POSITIVE
PRESSURES)
ASSEMBLY 2
(VACUUM)
ASSEMBLY 3
(POSITIVE
PRESSURES
& VACUUM)
ASSEMBLY 1
(POSITIVE
PRESSURES)
ASSEMBLY 2
(VACUUM)
ASSEMBLY 3
(POSITIVE
PRESSURES
& VACUUM)
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
DOUBLE ARRANGEMENTS
12A8187-D
12A7814-D
12A7839-A
B1428-3 / IL
through 15) or load ring (key 26, figure
14) enough to both load and seal the
seat ring gasket (key 13, figure 13, 14,
or 15). It also compresses the outer
edge of the bonnet gasket (key 10,
figure 13 through 15) enough to seal
the body-to-bonnet joint.
The proper bolting procedures in step
11 include--but are not limited
to--ensuring that bolting threads are
clean, and evenly tightening the cap
screws, or the nuts onto the studs, in a
crisscross pattern. Because of the
boltup characteristics of spiral wound
gaskets, tightening one cap screw or
nut may loosen an adjacent cap screw
or nut. Repeat the crisscross
tightening pattern several times until
each cap screw or nut is tight and the
body-to-bonnet seal is made. When
the operating temperature has been
reached, perform this torquing
procedure once again.