Instruction Manual
D101550X012
8532 Valve
June 2017
15
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
RETAINING RING SCREWS GASKET RETAINING BOLTS
NSm InSlbs NSm InSlbs
#10 4.6 41 4.0 35
1/4 11 100 9.2 81
5/16 25 220 19 167
3/8 45 400 33 295
NSm ftSlbs NSm ftSlbs
7/16 72 53 53 39
1/2 112 83 80 59
9/16 161 119 117 86
5/8 225 166 161 119
3/4 401 296 286 210
7/8 651 480 447 330
1 976 720 651 480
1‐1/8 1356 1000 837 617
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
Local Business Partner.
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
A5251‐1
LARGEST OUTSIDE
DIAMETER (KEY 5)
INTERNAL
TRAVEL STOP
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