Flowserve Limitorque Accutronix MX Mounting Instructions
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Flowserve Limitorque Accutronix MX Mounting Instructions

Flowserve Limitorque Accutronix MX Mounting Instructions

Limitorque actuation systems
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FCD LMENIM2312-00
Limitorque Actuation Systems
®
Limitorque
Accutronix MX
Quick Mounting Instructions

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  • Page 1 FCD LMENIM2312-00 Limitorque Actuation Systems ® Limitorque Accutronix MX Quick Mounting Instructions...

  • Page 3: Table Of Contents

    Flow Control Limitorque Actuation Systems The Limitorque Accutronix MX is the technological leader Contents among electric actuators and the simplest device to install Preparing the Stem Nut and commission. Follow this simple step-by-step installation Type “B” Bases: Torque-only Applications guide to install the MX on all valve types. Refer to the...

  • Page 4: Preparing The Stem Nut

    Flow Control Limitorque Actuation Systems Preparing the Stem Nut Exploded view of B4/B4E base The Accutronix MX has two (2) basic base designs: Drive sleeve Baseplate • Torque-only base, designated by a “B” prefix • Thrust-only base, designated by an “A” prefix Type “B”...

  • Page 5: Optional B1 Base (Not Applicable For Mx-85 Or -140)

    Flow Control Limitorque Actuation Systems Disassembly Optional B1 Base (not applicable for MX-85 or -140) 1. Remove the retaining ring (B4 base) or spiral-wound ring (B4E base) An optional torque base assembly may be added to allow for a greater that retains the torque nut in the drive sleeve.

  • Page 6: Type "A" Bases: Thrust-Only Applications

    Flow Control Limitorque Actuation Systems Exploded view of B1 base Type “A” Bases: Thrust-only Applications Standard A1/A1E Base Pipe plug The standard MX actuator thrust base is the A1 and may be bolted Socket head cap Housing, screw (M8 x 20) directly to the actuator.
  • Page 7 Flow Control Limitorque Actuation Systems Disassembly – Units MX-05/10/20/40 Exploded view of A1/A1E base (MX-05/10/20/40 only) Refer to the figure at left. Housing Quad ring Disassembly of the main housing from the base may be Socket head cap recommended to allow the base to remain on the valve if the actuator screw must be removed for service.
  • Page 8 Flow Control Limitorque Actuation Systems Reassembly – Units MX-05/10/20/40 Disassembly – Unit MX-85 Refer to the figure on page 7. Refer to the figure on page 9. 1. Clean the stem nut, washers, and bearings thoroughly. Disassembly of the main housing from the base may be 2.
  • Page 9 Flow Control Limitorque Actuation Systems Reassembly – Unit MX-85 Exploded view of thrust base (MX-85 only) 10-1 10-11 Refer to the figure at left. 1. Clean the stem nut, washers, and bearing(s) thoroughly. 10-10 10-12 2. Slide the second set of thrust washers and bearing in place if removed. 3.
  • Page 10 Flow Control Limitorque Actuation Systems Exploded view of thrust base (MX-140 only) NOTE: Screw mounting torque for both mounting thrust base to main 10-11 10-1 housing and thrust baseplate to thrust base housing. 10-12 Disassembly – Unit MX-140 10-14 Refer to the figure at left. 10-3 10-10 Disassembly of the main housing from the base may be...

  • Page 11: Type "Bl" Drive: Splined-Drive Applications (Not Applicable For Mx-85 Or -140)

    Flow Control Limitorque Actuation Systems 3. Machine the stem nut to suit the valve stem. Ensure sufficient category for rising and rotating stem valves per customer requirements. clearance to avoid unnecessary wear and heating during operation. Disassembly and reassembly is the same as the B4 base and the torque nut.

  • Page 12: Mounting (Type "B" Bases): Torque-Only

    Flow Control Limitorque Actuation Systems • Ensure there is adequate engagement of the stem nut with the valve 2. Lower the actuator onto the valve or gearbox stem. Align the stem nut stem or input shaft when mounted. Generally, the minimum length of key and keyway with the valve or gearbox stem key seat.

  • Page 13: Removal (Type "A" Bases): Thrust-Only

    Flow Control Limitorque Actuation Systems Ensure the thrust base stem nut has the lugs positioned upward to Checking the Settings engage with the drive sleeve slots when the actuator is reinstalled. When the assembly of the actuator to the valve is complete, the actuator Rotate the bronze nut while holding the base steady.
  • Page 16 Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specific data and warnings for all possible applications.

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