Flowserve MX Accutronix User Manual
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Accutronix MX Quick Mounting Instructions • LMENIM2312
Flow Control
Limitorque Actuation Systems
Disassembly
1. Remove the retaining ring (B4 base) or spiral-wound ring (B4E base)
that retains the torque nut in the drive sleeve.
2. Remove the torque nut. If the torque nut is difficult to remove, insert a
suitable device into the drive sleeve through bore and gently tap it
loose from the handwheel end.
3. Machine the torque nut to suit the valve stem or gearbox input shaft
(see LMASS2326, MX Performance and Dimensions for maximum
stem capacity). Ensure sufficient clearance for a smooth, sliding fit.
Reassembly
1. Clean the torque nut thoroughly and lightly grease.
2. Replace the torque nut in the drive sleeve. Ensure the torque nut
meshes with the drive lugs.
3. Refit the retaining ring (B4 base) or spiral-wound ring (B4E base).
Optional B1 Base (not applicable for MX-85 or -140)
An optional torque base assembly may be added to allow for a greater
stem acceptance. This base is supplied with a fixed bore and key as
defined by ISO 5210.
Disassembly
No disassembly is required since the torque nut has been machined to
an international standard. Clean the bore and lightly grease.
B1 base