Emerson Bettis M Series Installation, Operation And Maintenance Manual
Installation, Operation and Maintenance Manual
Bettis M Series
Stainless Steel Scotch Yoke Actuators
MAN-02-01-39-0704-EN Rev. 0
July 2019
Installation, Operation and Maintenance Manual
MAN-02-01-39-0704-EN Rev. 0
Table of Contents
Section 1: Introduction
1.1 General Application ....................................................................................... 1
1.2 Technical Data ...............................................................................................1
1.3 Installation .................................................................................................... 2
Section 2: Maintenance
Section 3: Jackscrew Override
3.1 Jackscrew Operating Instructions .................................................................. 4
3.2 Actuator Stroke Adjustment .......................................................................... 4
3.3 Models 006 through 270 .............................................................................. 4
3.4 Models 370, 740 & 575 .................................................................................4
Table of Contents
July 2019
Section 4: Manual HandPump
Hydraulic Override
4.1 Hydraulic Fluid Level ...................................................................................... 9
4.2 Remote Mounting the HandPump ................................................................. 9
Section 5: Integral Proximity
Switch Mounting
Section 6: Spring Conversion to change Operating Pressure
Section 7: Failure Mode Change - Spring Return
Section 8: Removal of Actuator from Valve
Section 9: Disassembly
9.1 Disassembly of Symmetric Yoke Actuators .................................................. 14
9.2 Disassembly of Canted Yoke Actuators ........................................................ 16
Section 10: Assembly & Operating Instructions
10.1 Assembly of Symmetric Yoke Actuators ...................................................... 17
10.2 Spring-Return Only ..................................................................................... 20
10.3 Assembly of Canted Yoke Actuators ............................................................ 21
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Table of Contents
July 2019
Section 11: Operating Instructions
Section 12: Important Safeguards
Section 13: Additional Safety Instructions for Actuators used
in a Potentially Explosive Atmosphere under
ATEX 2014/34/EU
Section 14: Additional Safety Instructions for Actuators
used in Emergency Shut-down Service
or IEC 61508 safety integrity
level (SIL) Compliant Installations
Installation, Operation and Maintenance Manual
MAN-02-01-39-0704-EN Rev. 0
13.1 Marking ...................................................................................................... 24
13.2 Selection ..................................................................................................... 24
13.3 Installation .................................................................................................. 24
13.4 Maintenance ............................................................................................... 24
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Table of Contents
Installation, Operation and Maintenance Manual
MAN-02-01-39-0704-EN Rev. 0 July 2019
Section 1: Introduction
Section 1: Introduction
1.1 General Application
Actuators are designed for "on-off" or modulating control of any quarter-turn ball,
buttery, rotary plug or damper style valve application.
1.2 Technical Data
Supply Pressure 40-160 psig, see product nameplate
Supply Medium Any pneumatic uid compatible with materials of construction
Temperature Rating Standard Range: -20°F to 210°F
Optional Range: -65°F to 300°F
Angular Rotation 90 degrees ± 8 degrees
NOTE:
Language translations of the safety related portions of this document are available at
www.emerson.com
Introduction
1
Section 1: Introduction
July 2019
1.3 Installation
The actuator can be mounted parallel or perpendicular to pipeline. The actuator can be
installed in any convenient position including vertical, horizontal or upside down.
A. Begin by bolting the mounting bracket to actuator only hand tight.
B. Install coupling on valve. Remove or disable any stops on the valve.
Use only the actuator position stops!
C. Install the actuator and bracket to valve being sure to leave all fastener
connections hand tight. If possible, stroke valve and actuator to a half open
position and physically shift actuator back and forth until coupling and all fasteners
are centered then tighten all bolts and nuts. This procedure will accurately align
valve stem to actuator output shaft and prolong valve stem seal life.
D. Cycle valve / actuator assembly and conrm smooth operation.
E. Adjust the actuator travel stops for perfect valve alignment in both open and
closed positions.
Installation, Operation and Maintenance Manual
MAN-02-01-39-0704-EN Rev. 0
NOTE:
If the valve disk is torque seated (E.G. Vanessa buttery), close the valve against the
actuator stop, then unscrew the stop until turns freely, then screw the stop back in until it
stops, then turn the stop with a wrench one additional turn and lock into place.
F. Tubing Connections – some models utilize two pistons for added power. Spring
return (single acting) dual cylinders designs require one “jumper” to make the
supply port common on both pistons. Double acting (air to air) dual cylinder
designs require two “jumpers.” See Figure 1 for typical arrangement.
CAUTION
Use correct length mounting bolts! Mounting bolts used in actuator mounting pad may
interfere with the actuator rotary mechanism. Select bolts that will not extend more than
two threads above the back of the mounting pad.
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Introduction
Installation, Operation and Maintenance Manual
TE
TE
Section 2: Maintenance
MAN-02-01-39-0704-EN Rev. 0 July 2019
Section 2: Maintenance
Actuators are factory lubricated and in general do not require periodic lubrication or
maintenance while in service. Actuators should be visually inspected periodically for
corrosion damage and promptly repaired. Actuators should be operated at least annually
to assure proper operation.
Figure 1
SINGLE ACTING ACTUATOR
ONE CYLINDER
SUPPLYSUPPLY
SOLENOID
OR
POSITIONER
EXHAUS
SINGLE ACTING ACTUATOR
TWO CYLINDERS WITH JUMPER
SUPPLYSUPPLY
SOLENOID
OR
POSITIONER
EXHAUS
DOUBLE ACTING ACTUATOR
ONE CYLINDER
SOLENOID
OR
POSITIONER
SHUT
OPEN
SHUT
XHAUST
OPEN
DOUBLE ACTING ACTUATOR
TWO CYLINDERS WITH JUMPER
SOLENOID
OR
POSITIONER
XHAUST
Maintenance
3
Section 3: Jackscrew Override
July 2019
Installation, Operation and Maintenance Manual
Section 3: Jackscrew Override
The jackscrew option is intended for infrequent or emergency on-site operation of the
automated valve.
3.1 Jackscrew Operating Instructions
1. Disengage power supply and vent air from actuator.
2. Operate the handwheel to drive the actuator into the desired position. Valve
position can be veried by checking the actuator position indicator. For models
006 through 270, the jackscrew must be returned to the fully retracted position
before actuator can resume normal operation. Back the jackscrew out until it
stops. Air will leak from the jackscrew unless it has been fully retracted against its
internal seal.
3.2 Actuator Stroke Adjustment
MAN-02-01-39-0704-EN Rev. 0
The jackscrew has a built-in actuator stroke adjustment, see Figure 2 and 3.
3.3 Models 006 through 270
See Figure 2:
1. Retract the jackscrew override completely by rotating counter clockwise.
2. Loosen the lock nut and turn the brass adjusting screw to the desired position.
The handwheel will rotate with the adjusting screw. Never make stroke
adjustments by turning the handwheel only.
3. Tighten lock nut.
3.4 Models 370, 740 & 575
See Figure 3:
1. Retract the jackscrew override completely by rotating clockwise.
2. Loosen the stroke adjusting screw and lock nut.
3. Using the handwheel, turn the jackscrew to adjust the actuator to the
desired position.
4. Screw the adjusting screw until it stops and tighten lock nut.
4
Jackscrew Override
Installation, Operation and Maintenance Manual
OPEN
SHUT
OPEN
SHUT
Section 3: Jackscrew Override
MAN-02-01-39-0704-EN Rev. 0 July 2019
Figure 2 Jackscrew Override - Models 006 through 270
Actuator stroke
adjusting screw
Note: Air escapes unless
jackscrew is fully retracted
Stroke adjusting screw
Jackscrew
Lock nut
Seal
JACKSCREW FULLY RETRACTED JACKSCREW EXTENDED
Jackscrew seal
Figure 3 Jackscrew Override - Models 370, 575 & 740
Handwheel
Lock nut
Stroke
adjusting
screw
Sealed jackscrew
assembly
Figure 4 Hydraulic Override
Reservoir
Handle
Selector valve
SHUT
OPEN
OPEN
SHUT
Lock nut
Stroke adjusting screw
Jackscrew Override
Manual Handpump Specications:
1. Maximum reservoir ll volume = 75 cu. in.
2. Pump relief pressure = 1500 psi
3. Pump volume/stroke = 0.66 cu. in.
4. Handle length = 24 in.
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38
27
46
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27
46
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Section 3: Jackscrew Override
July 2019
Single-Acting Spring-Return Two Pistons
Models: 012, 046, 058, 059, 072, 100, 144, 270, 344, 345, 420, 740, 944, 945, 1150,
1480, 1929, 1930, 2380
Single-Acting Spring-Return One Piston
Models: 006, 015, 023, 036, 050, 135, 210, 370 and 575
Installation, Operation and Maintenance Manual
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Jackscrew Override
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