Flowserve MX Accutronix - Manual (Page 12)

12 LMENIM2312 • Accutronix MX Quick Mounting Instructions
Flow Control
Limitorque Actuation Systems
• Ensure there is adequate engagement of the stem nut with the valve
stem or input shaft when mounted. Generally, the minimum length of
engagement is 1.5 times the diameter of the stem.
• Verify mounting studs or bolts are the correct length to suit the
thickness of the mounting plate.
• Verify hardware specifications for English style: socket head cap screw
per ASTM A 574 and ANSI 18.3. Hex head cap screw per SAE J429
Grade 5.
• Verify hardware specifications for metric style: hex and socket head
cap screws per Property Class 12.9.
• Clean and lubricate the valve stem or input shaft.
• Ensure adequate lifting facilities and slings are available at the
installation site.
NOTE: Do not use the handwheel to lift the actuator.
Mounting (Type “B” Bases): Torque-only
Refer to the figures on pages 4-6.
1. Ensure the torque nut is secured inside the actuator drive sleeve with
the retaining ring.
2. Lower the actuator onto the valve or gearbox stem. Align the stem nut
key and keyway with the valve or gearbox stem key seat.
3. Verify that the actuator and valve mounting adapter flanges mate
correctly.
4. Secure the actuator to the valve mounting adapter with mounting bolts.
Removal (Type “B” Bases): Torque-only
Refer to the figures on pages 4-6.
1. Remove the bolts that secure the actuator to the valve mounting
adapter. If type B1 base is used in addition to the standard type B4
baseplate, you may leave the B1 base attached to the actuator and
remove as a unit.
2. Lift the actuator from the actuator mounting adapter.
Mounting (Type “A” Bases): Thrust-only
Refer to the figures on pages 6-8.
1. The following are two options for mounting the type “A” base
actuator:
a. If the type “A” thrust base was removed from the valve mounting
adapter, replace the thrust base onto the valve mounting adapter.