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Data sheet
Sheet No.:
Date: November 2009
Copyright © Emerson Process Management. The information in this document is subject to change without notice.
Updated data sheets can be obtained from our website www.El-O-Matic.com or from your nearest Valve Automation Center USA: +1 813 319 0266 Europe: +31 74 256 10 10 Asia-Pacific: +65 6501 4600
www.El-O-matic.com
TM
A1.501.05 Rev. A
EL-O-MATIC ACTUATOR WITH DOUBLE STROKE ADJUSTMENT DSA
Dim.
in inch.
Actuator type
E25 E40 E65 E100 E150 E200 E350 E600 E950 E1600
A DA
6.26 7.09 7.83 8.70 10.00 11.14 12.01 15.35 17.32 20.47
B SR
6.77 8.03 9.80 10.51 12.20 14.17 15.24 18.90 20.94 25.24
C
3.15 3.66 4.13 4.65 5.51 5.63 7.13 8.66 10.20 11.69
D
0.79 0.79 0.79 0.79 0.79 0.79 0.79 1.18 1.18 1.18
H
2.91 3.39 3.86 4.25 4.76 5.04 6.81 8.15 9.09 264.00
I
1.81 2.01 2.26 2.48 2.76 2.87 3.71 4.45 4.96 5.59
J1
1.11 1.38 1.57 1.72 1.92 2.12 2.85 3.50 4.03 4.50
L
0.45 0.61 0.61 0.73 0.97 0.97 0.97 1.63 1.63 1.87
Y
1/4"-20 5/16"-18 5/16"-19 3/8"-16 3/8"-16 1/2"-13 1/2"-13 5/8"-11 5/8"-11 3/4"-10
X
1.42 1.63 1.63 1.99 2.36 2.46 2.85 4.02 4.02 4.31
X max.
1.63 1.91 1.91 2.30 2.64 2.91 3.31 4.51 4.51 4.88
Y
A
B
C
H
I
X
J
1
LL
1
2
D
3° 10°
3°
15°
adjustable
range
Closed
stopscrew (1)
Open
stopscrew (2)
Factory option:
Fail to Open
Y
A
B
C
H
I
X
J
1
LL
1
2
D
3° 10°
3°
15°
Stroke adjustment cam
Factory option:
"Fail open"
Description
Actuators with double stroke adjustment are normally used for high performance butterfly valves
where a fine adjustment is required for the closed position. In this version adjustment is provided
at the end of the opening and closing stroke positions. DSA actuators may be double acting or
spring return, though are normally used as spring return (fail close) actuators.
Operation
The closed position is adjusted by means of the stop-screw (1) located in the actuator body and
for the open position by the stop-screws (2) in the actuator end caps.
Identification
See data sheet A1.102.10
Specification
Pressure : Up to 120 psi
Operating media : Air, dry or lubricated or non-corrosive gas
Torque (90°) : Data sheet A1.104.01 - A1.104.02
Rotation -
- Spring return : Clock-wise on air failure.
- Double acting : Counter clock-wise with port “A” pressurised.
Other dimensions : Data sheet A1.103.XXX
Temperature : -4° to +176° F
Adjustable range : Closed position (1), -3° - 15°
Open position (2), 80° - 93°
Note
1) Can be provided with extra long end-cap stop screws for full range adjustment of the “open”
position.
2) This DSA option is not required on actuators fitted with manual override gearboxes, as MO
gearboxes already incorporate this function.
Important
1) "Fail open" is factory option.
2) When assembled for “fail open” operation (code D; see data sheet A1.504), both stop-screws
(1) and (2) will adjust the closed position. There is no adjustment for the open position!