Installa on, Opera on and Maintenance Manual ManA ‐en Rev.03/2018
Page 5
OMC s.r.l. Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcsrl.com - Tel.: (+39) 02.95.28.468
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ENGLISH
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4
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Pic. 5
Pic. 6
2.0 ACTUATOR CONNECTION
2.01 PNEUMATIC ACTUATOR CONNECTION
The pneumatic actuator is provided with two 1/4"NPT connections, one of which is closed by a filter. Connect the
control air pipe to the connection which has remained free. The control air must be clean, de-humidified and free
from oils and greases and must not exceed an allowed maximum pressure. The signal required to control the
valve is provided on the plate fixed on the actuator’s yoke. If the valve is provided with a pilot positioner, refer to
its manual.
3.0 ASSEMBLY
If the valve and the actuator are not supplied already assembled or if the original actuator must be replaced with
one of another Type or another size, perform the operations described in paragraph 4.01.
All above-described operations must be performed and supervised by skilled, trained and competent personnel.
The OMC valves are univocally identified by a serial number fixed on the plate located on the actuator’s yoke. To
order spare parts or for any need, always refer the above-mentioned number.
During the operation the valve is pressurized. Before performing any maintenance operation or
action on the flanges and closing caps, make sure that the line is depressurized (0 bar) and at
ambient temperature.
3.01 VALVE/ACTUATOR SEPARATOR
Referring to Pic. 5 or to Pic. 6, according to the available actuator, perform as follows:
Set the valve to the 50% stroke
Fully unscrew the screws (1) and remove the terminals (2)
Fully unscrew the ring nut (3) or the screws (4).
Extract the actuator
