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8540 Valve
September 2021
Table 1. Specifications
Valve Size and End Connection Styles
NPS J 3, J 4, J 6, J 8, J 10, and
J 12 wafer body valves
Maximum Inlet Pressure
Carbon Steel and Stainless Steel Valve Bodies:
Consistent with CL150 and 300
pressure/temperature ratings per ASME B16.34
unless limited by material temperature capabilities.
Shutoff Classifications
J
PTFE Seal: Bidirectional shutoff to Class VI per
ANSI/FCI 70‐2 and IEC 60534‐4.
Flow Characteristics
Approximately linear
Disk Rotation
Clockwise to close (when viewing from the drive shaft
end) through 90 degrees of disk rotation (see figure
8)
1. The pressure/temperature limits in this manual and any applicable standard or code limitation for valves should not be exceeded.
Table 2. Valve Size, Shaft Diameter, and Approximate Weight
VALVE SIZE, NPS
3
4
6
8
10
12
Installation
The valve is normally shipped as part of a control valve assembly, with the power actuator mounted on the valve. If the
valve or actuator have been purchased separately, or if the actuator has been removed for maintenance, mount the
actuator on the valve, and adjust actuator travel before inserting the valve body into the line. This is necessary due to
the measurements that must be made during the actuator calibration adjustment process. Refer to the Actuator
Mounting section of this manual to mount the actuator on the valve. Refer to the actuator instruction manual for
mounting and adjusting instructions before proceeding.
2
(1)
CLASS
mm
150
12.7
300
15.9
150
15.9
300
19.1
150
19.1
300
25.4
150
25.4
300
31.8
150
31.8
300
38.1
150
38.1
300
44.5
Flow Direction
See figure 3
Actuator/Valve Action
With the diaphragm or piston actuators, the valve
action is field‐reversible. Refer to information in the
Installation section.
Valve Classification
Face‐to‐face dimensions meet API 609 or MSS‐SP‐68
standards for face‐to‐face dimensions of wafer‐style
valves.
Shaft Diameters
See table 2
Approximate Weights
See table 2
SHAFT DIAMETER
Inches
1/2
5/8
5/8
3/4
3/4
1
1
1‐1/4
1‐1/4
1‐1/2
1‐1/2
1‐3/4
Instruction Manual
D104709X012
APPROXIMATE WEIGHT
Wafer‐Style
kg
Pounds
4.5
10
5.9
13
8.6
19
10
23
13
29
15
33
21
47
24
53
34
75
44
96
49
107
64
141
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