Instruction Manual
D101550X012
8532 Valve
June 2017
10
Figure 5. Proper Installation Steps
B2263‐1
VALVE IN CLOSED POSITION DURING INSTALLATION
(OR REMOVAL) TO PREVENT DAMAGE TO DISK SEALING
AREA. SHAFT HORIZONTAL
FLANGE GASKETS:
BE SURE THESE ARE
CENTERED ALONG WITH
VALVE
PIPE FLANGES:
OPENED ENOUGH TO ALLOW THE
VALVE AND GASKETS TO SLIP EASILY INTO PLACE
BOTTOM FLANGE BOLTS FORMING A CRADLE
FOR VALVE DURING INSTALLATION
FLANGE BOLTS TIGHTENED EVENLY TO
PREVENT GASKET LEAKAGE
CAUTION
For non‐ENVIRO‐SEAL packing: Tighten the packing follower nuts only enough to prevent shaft leakage. Excessive
tightening will accelerate wear of the packing and could produce higher friction loads on the valve stem.
1. For PTFE or graphite packing: Tighten standard packing follower nuts only enough to prevent shaft leakage.
Excessive tightening of packing will accelerate wear and could produce higher rotating friction loads on the valve
stem. If necessary, refer to the Packing Maintenance section.
2. The ENVIRO‐SEAL Packing Systems will not require this initial re‐adjustment. Refer to the separate instruction
manual Fisher ENVIRO‐SEAL Packing System for Rotary Valves (D101643X012
) for repair and adjustment
procedures.
3. For hazardous atmosphere or oxygen service valves, read the following Warning, and provide the bonding strap
assembly mentioned below if the valve is used in an explosive atmosphere.
WARNING
The valve shaft is not necessarily grounded when installed in a pipeline unless the shaft is electrically bonded to the valve.
To avoid personal injury or property damage resulting from the effects of a static electricity discharge from valve
components in a hazardous atmosphere or where the process fluid is combustible, electrically bond the drive shaft (key 3)
to the valve according to the following step.
To Next Page
Loading...
