Hd Ball Seal Lubrication; Bearing And Ball Maintenance; Dn 80 - 300 (Nps 3 Through 12) Valves; Continuous Threaded Rod - Fisher Vee-Ball V150 Instruction Manual

Vee-Ball Valves
June 2017
c. For NPS 10 and 12 valves:
D Place the piston ring (key 133) and retaining ring (key 132) into the appropriate groove in the seal protector
ring (key 3). The piston ring has one break in it; do not break it further.
D Install the wave spring (key 13) into the seal protector ring (key 3).
D If the valve has an attenuator, install the retaining ring (key 41). The octagonal shaped support wire ring has
two free ends. Place one of the free ends into the groove in the seal protector ring. Then starting at the
inserted end, press the rest of the ring into the groove completely.
D Lay the HD seal (key 11) down on a flat surface and push the seal protector ring (key 3) past the piston ring
(key 133) and into place. Make sure the seal is level. Go to step 5 in this procedure.
5. Install a replacement gasket (key 15) on the valve body (key 1 or 1A). Install the HD ball seal/seal protector ring
assembly into the valve body (key 1 or 1A).
6. Install washers (or clips), and screws that clamp the seal protector ring to the valve body [keys 3, 21, and 22; the
V200 valve uses clips (key 22) in place of washers].
7. If necessary, refer to the Packing Maintenance procedures to install the packing. Install the actuator using the
Actuator Mounting procedures or to the appropriate actuator instruction manual.

HD Ball Seal Lubrication

To assist with break‐in of the HD seals, it is recommended that the ball and seal be lubricated with dry film lubricant or
equivalent moly disulfide.

Bearing and Ball Maintenance

WARNING
Before performing the steps in this section, observe the WARNING at the beginning of the Maintenance section on page 9.

DN 80 - 300 (NPS 3 through 12) Valves

Procedures for disassembly and assembly of the bearings and ball cannot be accomplished until the ball seal and valve
packing are removed from the valve.
Refer to the Replacing Packing procedures to remove the actuator, and to remove the packing flange and packing
follower from the valve. When the packing disassembly steps are complete, return to this section.
Refer to the Replacing the Ball Seal procedures to remove the ball seal from the valve.
Table 4. Continuous Threaded Rod
Valve Size, DN
80
100
150
200
250
300
20
Valve Size, NPS
3
4
6
8
10
12
Threaded Rod Thread Size
0.25-20
0.25-20
0.25-20
0.3125-18
0.3125-18
0.3125-18
Instruction Manual
D101554X012
Thread Depth in Follower Shaft
0.5
0.5
0.5
0.62
0.62
0.94