The quality of the material used to manufacture our valves and control circuits avoids abnormal
wear of the internal components for many years. However, we recommend checking the valve as
follows:
After 5 months operation:
•
Control and clean the strainer (if present) installed on the main pipeline and the strainer on the
pilot circuit of the valve.
•
If blocked, the strainer on the pilot circuit takes the main valve gradually out of order.
NOTE: Clean the strainer regularly following the specific timetable of the plant. This timetable
cannot be predetermined but must be decided only when the valve is on duty.
After 12 months operation:
•
Control and clean the strainer (if present) installed on the main pipeline and the strainer on the
pilot circuit of the valve.
•
Remove the control circuit.
•
Remove the screws on the valve cover, remove the cover, and take out the obturator completely.
•
Check for any eventual damage of the rubber components, such as: the lip seals of the piston
and the seal gasket to schedule the maintenance intervention.
•
Assemble the obturator, the valve cover and tighten the bolts properly.
•
Put the valve back into service.
This kind of check allows scheduling the maintenance required by the valve, taking into account
the real working conditions.
13. Maintenance
14. Recommended spare parts
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
ACMO-AVK | IOM Manuals
ACMO-AVK_IOM_879-M100_00-20200520
12
ACMO-AVK CONTROL VALVE SERIES 879
879/BB0X99 - M100 PRESSURE REDUCING VALVE
ITEM
(see page 6)
QTY
DESCRIPTION
MATERIALS
2-3
1
O-RING
RUBBER EPDM
9
1
SPRING
STAINLESS STEEL AISI304
8
1
DIAPHRAGM
RUBBER EPDM
