Instruction Manual
D102178X012
V260 Valve
July 2017
10
Note
D
Verify that the ball opens into the dome windows last. (See figure 5)
D
If not, remove the dome and tailpiece and turn it 180 degrees to allow the windows to open last.
5. Install the grooved end of the groove pins (key 5) into the bearing plates (key 4) as far as they will go. Use only a
light tapping force, taking care not to bend the pins.
6. Apply dry film lubrication between the trunnion surfaces on the ball and the trunnion bearings.
7. Install new bearings (key 29) in the bearing plates (key 4).
WARNING
In the next step, be sure to secure the bearing plates on the ball to prevent them from falling. When lifting the ball, the
bearing plates may slide off the ball trunnions which may cause personal injury or property damage.
8. Lift the ball with a nylon sling through the bore and turn the ball until the port and trunnions are horizontal.
9. Slide one ball thrust washer (key 30) onto each side of the ball trunnions, and install a bearing plate (key 4) on each
side of the ball trunnions.
10. Carefully lower the ball and bearing plates onto the lower (inlet) tailpiece taking care not to damage the ball
surface.
While lowering the ball, guide the groove pins in the bearing plates into their proper location in the tailpiece. To
determine the proper location for Right Hand Mounting, turn the splined trunnion so that it is on your right hand side
when the attenuator dome is in front of you and the bottom of the valve is nearest you.
11. Install the grooved end of the groove pin (key 18) into the valve body, as far as it will go. Use only a light tapping
force, taking care not to bend the pin. Install the body studs (key 3) in the valve body and install two swivel hoists for
lifting the valve body.
12. Lift the valve body, using the swivel hoists, so it is centered over the ball and bearing plates. Be sure the shaft hole
is aligned with the splined trunnion on the ball. When lowering the valve body, take care not to damage the ball.
Guide the groove pins in the valve body into their proper location in the tailpiece.
13. Install the hex nuts(key 19) on the studs (key 3) and hand‐tighten them.
14. Lubricate and install the O‐ring (key 14) on the packing housing (key 16). Install the shaft bearing (key 32) in the
packing box housing.
15. Install the packing housing studs (key 22) in the valve body.
16. Apply anti‐seize lubricant to the large spline on the shaft. Line‐up the missing spIine tooth with the appropriate
space in the ball, and install the drive shaft (key 20) into the ball.
17. Install the shaft thrust washer (key 24) onto the shaft.
18. Install the packing housing (key 16) and nuts (key 23), and tighten them evenly. Orient the length of the packing
box housing perpendicular to the bore of the valve body.
WARNING
Refer to table 3 for bolt torque requirements. Exceeding any torque requirements could damage the valve and impair safe
operation.
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