EN -
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OMAL S.p.A.
Headquarters
: Via Ponte Nuovo, 11 - 25050 Rodengo Saiano (BS) Italy •
Production Site:
Via Brognolo, 12 - 25050 Passirano (BS) Italy
Ph.
+39 030 8900145 •
Fax
+39 030 8900423 • [email protected] •
www.omal.it
Rif. UMA800081A - 02/18
INSTALLATION, USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATOR “DA08”
IT
EN
valve flanges and/or shafts, it’s possible to carry out the installation with a connection plate for easy posi-
tioning and of appropriate sizing.
C) Bracket and connection joint.
Where, for technical installation reasons and due to the system, a certain distance is required between the
valve and actuator, or the flanges and the valve stem are not standard, or where direct installation is not
possible, the right solution is given by a bracket and a connecting joint. The bracket is a steel bridge that
allows to connect the valve on one side and the appropriate connection for the actuator on the opposite
side, leaving a space for a steel joint. The joint allows the transmission of the torque between the actuator
and the valve and is essential in the case of stem drives with keys.
Choose a joint that is appropriate for the flange and the right connections for bolting the actuator on the
valve without backlash.
Tightening torque of the screws
Size: M5
Torque Nm: 5-6
6) MATERIALS AND THEIR DURABILITY
The OMAL S.p.A. actuators are designed to have minimal resistance, maintenance-free, in accordance with
EN 15714-3, as shown in the following table.
Nominal torque (a)
Nm
Least number of cycles expected
for the pistons and the cylinder (b)
Minimum cycle time from 0-90 ° in
seconds “s”
≤125
500 000 (c)
3
≤1000
500 000
5
≤2 000
250 000
8
≤8 000
100 000
15
≤32 000
25 000
20
≤63 000
10 000
30
≤125 000
5 000
45
≤250 000
2 500
60
a – according to the EN ISO 5211 standard.
b – A cycle is composed of nominal 90° in both directions (90° to open + 90° to close). For values other than 90 °
as working angle, the duration is to be arranged between the manufacturer and the user.
c – For thermoplastic actuators, the least number of cycles is 250 000.
Note: Values based on a load of at least 60% of the stroke torque at 0,55 MPa
5,5 bar supply and according to the test procedure described
in attachment A of the EN 15714-3 standard.
Summary of Contents for DA08
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