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9500 Valve
February 2019
Table 3. Maximum and Minimum Allowable Mating Flange Diameters
VALVE SIZE, NPS
2
3
4
6
8
10
12
Figure 2. Valve Shaft Marking
1
OPEN
FLOW
LOCATION OF
INDEX MARK
ON END OF
VALVE SHAFT
1
WITH SPLINED
VALVE SHAFT
EQUAL MEASUREMENTS BETWEEN VALVE FACE AND DISK EDGE AT TOP AND BOTTOM ENSURE FULLY CLOSED DISK.
1
2
FOR FISHTAIL DISK, PARTIAL KEYWAY OR FLAT SPOT IS ON SAME SIDE AS NOSE OF DISK.
A2755‐1
WARNING
Avoid personal injury from sudden release of process pressure. Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure and relieve any actuator spring precompression.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug.
4
MAXIMUM AND MINIMUM DIAMETER OF MATING PIPING OR FLANGES
Minimum
mm
Inches
30
1.20
64
2.50
89
3.50
145
5.70
196
7.70
246
9.70
297
11.70
NOSE OR LEADING EDGE OF DISK
LOCATION OF FLAT SPOT ON VALVE SHAFT
TAIL OF FISHTAIL DISK
Instruction Manual
Maximum
mm
64
92
117
171
222
273
330
2
D100380X012
Inches
2.50
3.62
4.62
6.75
8.75
10.75
13.00
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