Ptfe Seals - Emerson Fisher 8532 Instruction Manual

Instruction Manual
D101550X012
To install a new seal, O‐ring (key 6), and retaining ring gasket, follow the appropriate instructions given below.
Table 6. Torque Values for Fasteners
FASTENER NOMINAL SIZE
#10
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1‐1/8
Note: These values are based upon standard materials, S66286/N07718 screws and ASTM A193GRB6 bolts. For other special fastener materials,
please contact your Emerson sales office

PTFE Seals

1. Locate the replacement seal ring (key 5) and note the shape of the ring. The ring is wider across one edge diameter
and narrower across the other edge diameter. Around the outside circumference is one wide groove.
Before installing the seal ring into the valve body, place the O‐ring (key 6) into the wide, outer groove of the seal ring.
Refer to figure 8.
2. Install the seal ring and O‐ring assembly in the valve body. The wider outside diameter of the seal ring goes into the
T‐slot area of the body (see figure 5). Start the edge with the wider diameter into the T‐slot of the valve body using a
blunt‐end screwdriver. If you have a maintenance kit, use the seal installation tools.
Figure 8. Typical Seal Installation
RETAINING RING SCREWS
NSm
4.6
11
25
45
NSm
72
112
161
225
401
651
976
1356
Local Business Partner.
A5251‐1
InSlbs
41
100
220
400
ftSlbs
53
83
119
166
296
480
720
1000
LARGEST OUTSIDE
DIAMETER (KEY 5)
INTERNAL
TRAVEL STOP
GASKET RETAINING BOLTS
NSm InSlbs
4.0
9.2
19
33
NSm ftSlbs
53
80
117
161
286
447
651
837
8532 Valve
June 2017
35
81
167
295
39
59
86
119
210
330
480
617
15