EN -
9
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.com
Reference 8_1522 - UMAAPRK0 - 07/20
IT
EN
DE
FR
ES
INSTRUCTION MANUAL
RACKON: RACK & PINION PART TURN PNEUMATIC ACTUATOR
RK10 - RK480
5.3 Spring Return (SR) FAIL TO OPEN
Supplying air into port (2) pistons move outward compressing the springs and actuator shaft rotates clockwise to close the valve.
Opening action is realized stopping air feeding. Springs energy push pistons back and consequently shaft rotates counter-clockwise.
To avoid dust or solid particles incoming, close port (4) using a cap. In case of explosive environment use protection caps in complian-
ce with National safety or technical Standards.
5.4 Connection diagram
Remote operation control should be done connecting a direct solenoid valve to VDE/VDI 3845 NAMUR plate or connecting a piping
system directly to ports (2) (4). Use an independent electric control cabinet.
According with ISO 5599-2 Standard, actuator ports connection position, location, orientation and form shall be clearly identified and
marked with numbers 2 and 4.
Standard Double Acting (DA) and Spring Return (SR) actuators shall be Clockwise (CW) direction for Closed valves, while Coun-
ter-Clockwise (CCW) direction for Opened valves.
Double acting
Spring return FC
Rotazione oraria
dell'albero
Clockwise rotation
of the shaft
2
Rotazione antioraria
dell'albero
Counter-clockwise
rotation of the shaft
4
2
3
1
