Assembly; Bearing And V-Notch Ball Maintenance - Fisher V150 Instruction Manual

43B7128-A
A6066-1/IL
Figure 5. Ball Seal Assembly Detail

Assembly

Refer to figure 5 for part and key number locations
during seal installation.
1. Thoroughly clean all parts that are to be re-used or
obtain replacement parts. Be sure that all sealing sur-
faces are in good condition without scratches or wear.
If the valve has been installed between line flanges
and the flange studs and nuts have been tightened,
always replace the gasket (key 15).
If you have not already done so, lift the valve and
place it with the outlet flange face flat on the protected
working surface. Use the lever from the actuator, or
provide some other safe method to rotate the V-notch
ball into the closed position. The inlet flange face
should be up, and the ball approximately centered
within the opening.
2. Make sure the V-notch ball cannot rotate during
seal assembly procedures (read the Warning on page
8).
14 through 20-Inch Design V150 and V300
3. For valves with composition ball seals:
Install the composition seal (key 11) into the valve
body.
Install the gasket (key 15) on the valve body.
Install the seal protector ring (key 3) into the valve
body. (Go to step 6 below.)
4. For valves with HD metal seals:
Lubricate with Mag Lub or an equivalent lubricant,
and install the radial seal (key 37) into the appropriate
groove in the seal protector ring making sure the open
side of the radial seal faces away from the ball.
Install the wave spring (key 13) on the seal protec-
tor ring (key 3).
Install the HD metal seal (key 11) into the seal pro-
tector ring (key 3), past the radial seal. While pushing it
past the radial seal, make sure the HD metal seal is level.
To assist with break-in of the HD metal seals, it is
recommended that the V-notch ball and seal be lubri-
cated. Apply Dow Corning 321 dry film lubricant or equiv-
alent to the seat of the HD metal seal (key 11) and to the
face of the ball.
During break-in, if the V-notch ball rota-
tion is not smooth, it may be necessary
to tighten the packing slightly to damp-
en any tendency for stick-slip motion of
the ball and seal assembly.
5. Install the HD metal ball seal/seal protector ring
assembly into the valve body (key 1). Go to step 6
below.
6. Install the retaining screws (key 21) that secure the
seal protector ring (key 3) to the valve body (key 1).
Tighten the screws (key 21).
7. If necessary, refer to the packing maintenance pro-
cedures to install the packing. Install the actuator us-
ing the Actuator Mounting procedures. If necessary,
refer to the valve adjust steps in the actuator mounting
procedures, or to the appropriate actuator instruction
manual.

Bearing and V-Notch Ball Maintenance

Procedures for disassembly and assembly of the bear-
ings and V-notch ball cannot be accomplished until the
ball seal and valve packing are loosened.
Refer to the Packing Maintenance procedures to
remove the actuator.
Note
9