Instruction Manual

Instruction Manual
D101554X012
Vee-Ball Valves
January 2015
18
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
twofreeends.Placeoneofthefreeendsintothegrooveinthesealprotectorring.Thenstartingatthe
inserted end, press the rest of the ring into the groove completely.
D Lay the HD metal 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 i n this procedure.
5. Install a replacement gasket (key 15) on the valve body (key 1 or 1A). Install the HD metal 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.
HDMetalSealLubrication
To assist with break-in of the HD metal 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 7.
NPS3through12Valves
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 t he valve.
Table 3. Continuous Threaded Rod
Valve Size, NPS Threaded Rod Thread Size ThreadDepthinFollowerShaft
3 0.25-20 0.5
4 0.25-20 0.5
6 0.25-20 0.5
8 0.3125-18 0.62
10 0.3125-18 0.62
12 0.3125-18 0.94
Disassembly
WARNING
When the actuator is removed from the valve, the ball/shaft assembly may suddenly rotate, with a shearing, cutting
motion, which could result in personal injury. To avoid injury, carefully rotate the ball to a stable position at the bottom of
the valve body cavity. Make sure the ball will not rotate.