
8
Installation and Maintenance Manual
E2K-402-0817 Rev. 3
September 2018
Assembly to Valves
3.2.2
Spline Bushing (Quarter-Turn)
Bettis removable Spline Bushing allows easy adaptation to valve shaft diameter and Key.
Actuator may be rotated with respect to valve shaft for unexpected or awkward field
installations.
1.
Move valve to full Open or Close.
2.
Place Spline Bushing on valve shaft with Key and tighten set screw.
3.
Using handwheel on actuator, move gear position indicator arrow to full Open or
Close (the position in Step 1)
4.
Position actuator so Spline Bore is correctly aligned with the Spline Bushing on
stem shaft.
5.
Move actuator onto shaft until flange faces properly mate. Secure with screws thru
the adapter flange into base of actuator.
3.3
Quarter-Turn Valve
3.3.1
Stop Setting Procedure
Built-in mechanical stops are provided to prevent handwheel operation beyond total valve
travel (90 ± 6°). End of travel stops are independently adjusted, locked in place and sealed.
Figure 4
Type P, Q and R
(top mount)
(86)
(46)
(48)
Loosen both Locknuts (46) and back out two Stopbolts (86) to allow valve to close and
open fully. Ensure Electrical Travel Limit Switches have been adjusted (see appropriate
section of this manual), proceed as follows:.
1.
Run actuator electrically to full Close.
2.
Screw Close (86) Stopbolt in until it seats, then back off 1/2 turn. Install (48)
Washer and tighten (46) Locknut.
3.
Run actuator electrically to full Open.
4.
Screw Open (86) Stopbolt in until it seats, then back off 1/2 turn. Install (48)
Washer and tighten (46) Locknut.
Section 3: Assembly to Valves