Description; Specifications; Installation - Emerson Fisher 3025 Instruction Manual

3025 Actuator
May 2011

Description

The Fisher 3025 size P460, P462, P460-200 and P900 spring-opposed diaphragm actuators position the valve plug in
the valve body in response to varying controller or valve positioner pneumatic output signals applied to the actuator
diaphragm. They can be specified either direct (air-to-close) or reverse acting (air-to-open). The size P460 offers 65
mm maximum actuator travel. The sizes P462 and P900 provide 120 mm maximum actuator travel. The size
P460-200 offers 203 mm maximum actuator travel. The 3025 actuator can be equipped with a side-mounted
assembly. It is usually used as an auxiliary manual actuator.
Table 1. Specifications
SPECIFICATION
Nominal Effective Area
Yoke Boss Diameter
Acceptable Valve Stem Connection
Maximum Travel
Maximum Diaphragm Casing Pressure
Temperature Capabilities
Pressure Connections (female)
Approximate Actuator Weights
Approximate Side Handwheel Weights

Specifications

Refer to table 1 for Specifications of the 3025 actuator. See the actuator nameplate for specific information about
your actuator.

Installation

Key number locations are shown in figures 3 through 12, unless otherwise indicated. Figures 3 and 4 show the size
P460 actuator, figures 5 and 6 the size P462, figures 7 and 8 the size P460-200 and figures 9, 10, 11 and 12 illustrate
the size P900.
2
P460
2
cm 1800
2
inch 279
3-9/16 inch x
5 inch x
5H inch x
75 mm x
120 mm x
130 mm ---
3/4-16UNF x
1-14UNS x
1-1/4-12UNF x
M16 x
M20 x
M30 x
mm 65
inch 2-5/8
bar
Psig
_C
_F
1/2 NPT x
3/4 NPT x
1 NPT ---
kg 140
lb 310
kg 40
lb 90
Instruction Manual
ACTUATOR SIZE
P462 P460-200
1800 1800
279 279
x x
x x
x x
x ---
x ---
--- ---
x x
x x
x x
x ---
x ---
x ---
120 203
4-3/4 8
4
58
-30 to 80_C
-22 to 176_F
x x
x ---
--- x
190 250
420 640
40 100
90 220
D251402X012
P900
3600
558
---
x
x
---
x
x
---
x
x
---
x
x
120
4-3/4
x
x
---
430
1000
65
140