Masoneilan 31000 Series Control Valve Instruction Manual | 6
Copyright 2020 Baker Hughes Company. All rights reserved.
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 approxi-
mately 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 ac-
tuator be carefully followed. An incorrect setting will
lead to wear of seat or plug.
Figure 4
Section View of the Safety Packing
1. Actuator Settings
A. Valve closed on air failure (Air to open) (Figure 7)
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).
Figure 2
Figure 3
Fitting Tool
for Seat
Ring/Valve
Size
Part Number
1” (25mm)
2” (50mm)
3” (80mm)
603003910-779-0000
603003940-779-0000
603003950-779-0000
Assembly Tool for
Packing Box
Assembly Tool for
Seat Rings
Ref. Order No. for the
Set: 00-603004100-799
Packing
Tool Kit
Part Number
Tools/Kit
for Packing
Assembly
603004100-888-
0000
1. Reference CES 495 for details;
Pages 11-12
2. Above parts available via iSTORE
