Emerson Fisher V150E Instruction Manual page 11

Instruction Manual
D103435X012
Figure 6. HD Seal Removal Plate Dimensions
VALVE SIZE,
Minimum‐Maximum,
NPS
mm
3x4 75.9‐76.2
4x6 95.0‐95.3
6x8 126.7‐127.0
8x10 158.5‐158.8
10x12 212.5‐212.7
Installing HD metal seals
Refer to figures 6, and 13 for key number locations during seal installation.
Thoroughly clean all parts that are to be reused and obtain replacement parts. Be sure that all sealing surfaces are in
good condition without scratches or wear. Place the valve body on a flat surface with the inlet side of the valve facing
up.
1. Lubricate the radial seal (key 37) and install into the appropriate groove in the valve body, making sure the open
side of the radial seal faces away from the ball.
2. Install the wave spring (key 13) into the appropriate groove in the valve body.
3. HD Metal Seal Lubrication will assist with break-in of the HD metal seals and with assembly. It is required that both
the ball surface and seal be lubricated with dry film lubricant or equivalent moly disulfide.
4. Position the valve body on a flat surface with the outlet side of the valve facing up.
a. On all sizes without the ball installed, the HD seal can be installed by pushing the HD seal past the wave spring
and radial seal, making sure the HD metal seal remains level. Following this, install the remaining trim
components as explained under the Bearing and Ball Maintenance section and specifically the Assembly heading
on page 13.
b. On NPS 6x8 and larger valves, if the ball is still installed, rotate the ball past the 90 degree open position and hold
it there while you install the HD metal seal (key 11) into the valve body. Push the HD seal past the wave spring
and radial seal, making sure the HD metal seal remains level.
5. 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.
6. 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.
7. Continue to check the ball's position and re-center if necessary during actuator mounting and packing adjustments.
DIMENSION A
Minimum‐Maximum,
Inches
2.990‐3.000
3.740‐3.750
4.990‐5.000
6.240‐6.250
8.365‐8.375
A5544
V150E Valve
July 2017
6.4 mm
(0.250 INCHES)
MINIMUM
A
11