Emerson Fisher 3024C Data Sheet

3024C Actuator
D103051X012
Fisherr 3024C Diaphragm Actuator
The 3024C actuator is a compact spring opposed pneumatic diaphragm actuator incorporating a cast yoke mounting and is suitable for general purpose actuation of globe valves. It will position the valve plug in response to varying controller or valve positioner pneumatic output signals applied to the actuator diaphragm. The 3024C actuator can be assembled as either direct-acting or reverse-acting and provides dependable and on-off or throttling operation of automatic control valves.
Product Bulletin
61.1:3024C
March 2012
Features
Application Versatility–With eight different
configurations available, there is an actuator size to meet your needs. Multi-spring combinations allow for accurate selection of actuator thrust and valve travel.
Reversible Action–The simple design allows the
change of action from direct to reverse acting without the requirement for extra parts. Change of action can be easily made in the field.
High Thrust Capability–The moulded diaphragm
and high strength casings allow for a maximum casing pressure of 6 bar, enabling a high stem thrust for a given size diaphragm.
Positive Connections–Split block stem connection
provides a solid transfer of motion while allowing easy mounting and no linkages that create lost motion or inaccurate valve positioning.
W8488
Rugged Construction–The cast steel yoke and
Severe Temperature Applications–Through careful
Compact Design–The compact size minimizes
3024C Actuator Mounted on Fisher Valve
heavydutysteelcasingsprovidestability, protection against corrosion, longevity, and resistance against misuse.
selection of construction materials, this actuator canbeusedforawiderangeofambient temperature conditions from a minimum of -40_C to a maximum of +82_C.
weight and space needed.
Available Configurations
Refer to figure 1.
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Product Bulletin
61.1:3024C March 2012
3024C Actuator
D103051X012
Direct Action
With the direct action mode on the 3024C actuator, applying air pressure to the upper side of the diaphragm forces the actuator stem downward while, atthesametime,compressingthespringsonthe underside of the diaphragm. Refer to figure 1. When this pressure is reduced, the opposing spring force moves the actuator stem upwards. Should the loading pressure fail, the springs force the stem to the extreme upward position, thereby providing fail-open action for apush-down-to-closevalve.
Reverse Action
With the reverse action mode, air is applied on the underside of the diaphragm while opposing spring force is on the top side. Increasing air pressure will force the stem upwards. When the loading pressure is reduced, the stem moves downwards. Should loading pressure fail, the springs force the stem to the extreme downward position, thereby providing fail-closed action for a push-down-to-close valve.
Accessories
Handwheels
An optional side-mounted handwheel can be fitted to all sizes of actuator with travel up to 32 mm (1.25 inch) and where the maximum actuator thrust is less than 14,000 N (3150 lbf). These handwheels provide a robust method of manually operating the valve in an emergency o r when there is a loss of instrument air. Refer to figures 2 and 3 and table 1 for details.
Note, a side-mounted handwheel cannot be fitted on the sizes 45 and 45E actuator if an adjustable travel stop is fitted as well.
When mounted on a direct action actuator, turning the handwheel clockwise always moves the stem downwards. When mounted on a reverse action actuator, turning the handwheel clockwise moves the stem upwards. Disengagement of the handwheel to enable automatic operation is simply accomplished by rewinding the handwheel.
Valve Compatibility
With the availability of both metric and imperial threaded stem connectors, the 3024C can be used with a range of valve body assemblies such as the Fisher metric 1018S construction or imperial easy-et and RSS valve body constructions, along with others.
Table 1. Handwheel Specifications
ACTUATOR
SIZE
30 and 30E 200 7.87 0.24 6.1 179 40 5000 1125
34, 34E, 40,
and 40E
45 and 45E 250 9.84 0.21 5.5 400 90 14000 3150
1. Tangential handwheel force required to produce the handwheel output force shown.
2. Brass operating nut and stainless steel screw.
HANDWHEEL
DIAMETER
mm Inch mm Inch N lbs N lbs
250 9.84 0.21 5.4 286 64 10000 2250
TURNS PER
mm/INCH
TRAVEL
RIM FORCE
(1, 2)
Contents
Features 1.....................................
Available Configurations 1.......................
Direct Action 2................................
Reverse Action 2..............................
Valve Compatibility 2..........................
Accessories 2..................................
Handwheels 2................................
HANDWHEEL
OUTPUT
FORCE
Adjustable Travel Stops
Top mounted adjustable up travel stops are available for all actuators from size 30 to 40E. For the larger sizes 45 and 45E, an adjustable stop can be fitted to the actuator stem below the diaphragm casings. Both constructions give total variable adjustment of the travel of the actuator by limiting movement in the upward direction. Refer to figures 4 and 5.
Others
Accessories such as transducers, positioners, position transmitters, air relays, volume boosters, switching valves, lockup valves, limit switches, and solenoid valves are also available for actuator mounting. They are described in separate publications. Contact your Emerson Process Management sales office for details.
Adjustable Travel Stops 2.......................
Others 2.....................................
Construction Materials 6.........................
General S pecifications 6.........................
Actuator Dimensions 9..........................
Ordering Information 9..........................
2
3024C Actuator
D103051X012
Figure 1. Typical Applications
Product Bulletin
61.1:3024C
March 2012
W8466-1 W8495-1
3024C (AIR RETRACTS STEM)
W8496-1
3024C (AIR EXTENDS STEM)
3024C FITTED WITH A SIDE-MOUNTED HANDWHEEL
3
Product Bulletin
61.1:3024C March 2012
Figure 2. Side-Mounted Handwheel with Air-Extends-Stem Actuator
3024C Actuator
D103051X012
1Q57490
Figure 3. Side-Mounted Handwheel with Air-Retracts-Stem Actuator
1Q57490
4
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