Emerson Process Management 3024C - Manual (Page 2)

3024C Actuator
Instruction Manual
Form 5760
March 2007
2
Figure 2. Schematic of Type 3024C
1Q57489
AIRĆTOĆCLOSE (ATC) AIRĆTOĆOPEN (ATO)
an ATC (air-to-close) actuator and an ATO
(air-to-open) actuator.
The Type 3024C ATC (air-to-close) actuator springs
are located under the diaphragm plate and they fully
retract the actuator stem for fail action upon loss of
diaphragm casing pressure. The Type 3024C ATO
(air-to-open) actuator springs are located on top of
the diaphragm plate and they fully extend the
actuator stem upon loss of diaphragm casing
pressure. The actuator is mounted on the valve by
means of a cast yoke.
Figure 3. Type 3024C Actuator Nameplate
1Q574760
The 3024C can be equipped with a side mounted
handwheel if required (figure 10). An adjustable up
travel stop can also be fitted (figures 11 and 12).
Specifications
Refer to table 1 for Specifications of the Type 3024C
actuator. See the actuator nameplate (figure 3) for
specific information about your actuator.
Table 1. Specifications
Specification
Actuator Size
Specification
30 30E 34 34E 40 40E 45 45E
Nominal Effective Area See tables 2 and 3.
Maximum Operating Pressure Bar 6 Maximum Operating Pressure
to Diaphragm psig 87
Maximum Travel
mm 16 - - - 16 - - - 32 - - - 32 - - -
Maximum Travel
Inch - - - 0.75 - - - 0.75 - - - 2 - - - 2
Yoke Boss Diameter
Inch
(mm)
2-1/8
(54 mm)
2-1/8
(54 mm)
2-1/8
(54 mm)
2-1/8
(54 mm)
2-13/16
(71 mm)
2-13/16
(71 mm)
2-13/16
(71 mm)
2-13/16
(71mm)
Valve Stem Connector Thread
mm M12 x 1.75 - - - M12 x 1.75 - - - M16 x 2 - - - M16 x 2 - - -
Valve Stem Connector Thread
Inch - - - 3/8-24 - - - 3/8-24 - - - 1/2-20 - - - 1/2-20
Temperature Range
_C Nitrile diaphragm and steel studs and nuts: –40 to +82
Temperature Range
_F Nitrile diaphragm and steel studs and nuts: –40 to +180
Pressure Connections Inch 1/4 – 18 NPT
Maximum Approximate kg 9.5 9.5 18.0 18.0 19.5 21.5 33.5 35.5 Maximum Approximate
Weight (without handwheel) lb 20.9 20.9 39.7 39.7 43.0 47.4 73.9 78.3
Maximum Approximate kg 16.5 16.5 25.0 25.0 26.5 28.5 40.5 42.5 Maximum Approximate
Weight (with handwheel) lb 36.4 36.4 55.1 55.1 58.4 62.8 89.3 93.7