Instruction Manual
D103435X012
V150E Valve
July 2017
15
15. When the above conditions are met, tack weld the taper key (key 4) to the ball ear on the head end of the key (see
D
1/8 inch diameter weld on NPS 3x4, 4x6, 6x8 valves,
D
3/16 inch diameter weld on NPS 8x10 and 10x12 valves
16. Use the pry to move the ball tightly against the bearing on the actuator side of the valve to help ensure correct
side-to-side centering of the ball (key 2) on the seal (key 11). See figure 4.
17. Be sure that the HD seal is fully installed in the valve. Carefully rotate the ball to engage the HD seal while applying
force across the middle of the seal to compress the wave spring until the ball is fully engaged. Be cautious during
this process, knowing that excessive force may damage the ball. Keep the ball in the engaged position going
forward.
18. Continue to check the ball's position and re-center if necessary during actuator mounting and packing
adjustments.
For all constructions:
Refer to Packing Maintenance, and other procedures as necessary to complete the assembly of
the valve.
Actuator Mounting
Use the appropriate actuator instruction manual, this section of this manual, and figure 9 of this manual when
mounting the actuator or changing actuator styles and positions.
1. To help ensure correct centering of the Vee‐Ball (key 2) on the seal (key 11), be sure the ball is closed when
mounting the actuator (for applications other than Spring Return Fail‐Open).
2. Clean the valve shaft and actuator lever splines to be sure the actuator lever will slide on easily. Only drive the lever
in if absolutely necessary.
3. Carefully wedge the ball solidly against the actuator‐side bearing, using a screwdriver or similar tool inserted
between the lower ear of the ball and the valve body. This will center the ball. See figure 4.
Figure 8. Taper Key Installation
MAXIMUM ENGAGEMENT OF TAPER KEY
31B0727‐E
A6035‐1
BALL
(KEY 2)
TACK WELD
TAPER KEY
(KEY 4)
DRIVE SHAFT
(KEY 6)
TACK WELD
TAPER KEY
(KEY 4)
MINIMUM ENGAGEMENT OF TAPER KEY
Table 4. Taper Key Minimum Depth
Valve Size, NPS
Minimum Depth To Drive Taper Key After Initial Solid Contact, mm (Inches)
3x4, 4x6, 6x8
8x10, 10x12
4.8 (0.188)
5.6 (0.219)
Table 5. Taper Key Maximum Depth
Valve Size, NPS
Maximum Depth To Drive Taper Key After Initial Solid Contact, mm (Inches)
3x4, 4x6
6x8
8x10, 10x12
7.1 (0.281)
7.9 (0.312)
9.5 (0.375)