Instruction Manual

Instruction Manual

D101554X012

Vee-Ball Valves

January 2015

Note

For ease of assembly, the follower shaft (key 9) should be inserted into the ball before installing the ball in the following

applications:

D NPS 3 valve w ith out ball/attenuator

D NPS 4 through 12 valves with ball/attenuator.

Carefully install the ball into the valve body cavity.

D For Vee-Ball with

attenuator (NPS 4 through 12 valves), carefully install the ball into the valve body cavity. For NPS 4

valves, install the ball/attenuator through the inlet of the valve. For NPS 6, 8, 10, and 12 valves, install the

ball/attenuator through the outlet of the valve. Taking hold of the follower shaft ear on t he ball/attenuator, you

must position the scalloped edge of the attenuator against the valve bore opening and then carefully pivot, or roll,

the ball/attenuator into the valve body (see figure 18).

After you have installed the ball (key 2) into the valve body assembly, firmly support the ball while installing the shafts.

4. Installing the follower shaft (key 9):

D For NPS 3 v alves: The follower shaft (key 9) should already have been inserted into the ballbeforetheballwasput

into the valve body. Insert the follower shaft (key 9) into the valve body bearing (key 10).

D For NPS 4 and larger valves: Insert the fol lower shaft (key 9) through the ball, a nd into the valve body bearing (key

10).

D For NPS 4 t hrough 12 valves with

ball/attenuator: The follower shaft (key 9) should already have been inserted into

the ball/attenuator before the ball was put into the valve body. Insert the follower shaft (key 9) into the valve body

bearing (key 10).

Then for all sizes, align the hole in the follower shaft with the holes in the ball. Insert the small end of the groove pin

(key 7) into the hole in the ball and into the follower shaft. The pin will hold the parts in place while the drive shaft (key

6) is being installed.

Table 4. Taper Key Minimum Depth

Valve Size, NPS Minimum Depth To Drive Taper Key After Initial Solid Contact, mm (Inches)

3, 4, 6

8, 10, 12

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 C ontact, mm (Inches)

3, 4

8, 10

7.1 (0.281)

7.9 (0.312)

9.5 (0.375)

10.3 (0.406)

5. Installing the Drive Shaft:

CAUTION

The drive shaft must be used with the correct Vee-Ball. Refer to the tag (see figure 13) attached to the Vee-Ball and to the

drive shaft.