GE Baker Hughes Masoneilan 31000 Series Instruction Manual page 9

NOTE: Carefully place the valve lever (135) on to the
splines so that its free end reaches as near as possible
(this depending on the splines of the plug shaft) to the
housing wall of the yoke (Figure 6 distance approximately
28 mm). The position of the plug (3) should not be allowed
to change during this process.
3. Secure the yoke to the valve body with screws (19) (Figure 1).
7.3 Setting the Actuator (Figures 6, 7, 8)
The actuator setting depends on the required fail-safe position
of the valve (see Step 1).
Since the seat and plug are of soft materials, the lever (135)
must be set so that the valve produces the required tightness.
The handwheel or adjusting tool (Figure 6), can be used as an
aid.
The selected tool is screwed until the plug is brought into the
closed position. The tightness of the seat/plug seal can be
checked using an appropriate method with the handwheel or
adjusting tool being tightened until the required tightness is
obtained.
It is essential that the instructions for setting the actuator be
carefully followed. An incorrect setting will lead to wear of seat
or plug.
© 2017 Baker Hughes, a GE company. All rights reserved.
Assembly Tool for
Packing Box
Ref. Order No. for the
Set: 00-603004100-799
Figure 2
1. Actuator Settings
A. Valve closed on air failure (Air to open) (Figure 7)
Valve Size Reference Order
(in.) No.
1 (25 mm) 00-603003910-780
2 (50 mm)
00-603003940-780
3 (80 mm)
00-603003950-780
Assembly Tool for
Seat Rings
Figure 3
Figure 4
Section View of the Safety Packing
a. Determine the position of the lever at which the
valve reaches the required tightness and measure
the "D" distance from the contact surface of the
spring barrel on the yoke to the beginning of the
hole for the clevis pin in the lever (135).
b. The clevis (100) can now be adjusted so that the
distance from the beginning of the hole for the
clevis pin to the contact surface for the yoke is 1
to 2 mm less than the previously measured "D"
distance.
c. Remove the handwheel or setting tool and secure
the spring barrel with the screws (101) and washers
(102).
Masoneilan 31000 Series Control Valve Instruction Manual | 6