prObLEM
pLANNED MAINTENANCE
VALVE SpECIFICATIONS:
- Max. working pressure :
10 bar (145 psi) DN15--100
8 bar (115 psi) DN125
6.5 bar (94 psi) DN150
- Min. working pressure :
Vacuum
-
Max. product temperature :
120 °C (284 °F)
- Min. product temperature :
-10 °C (14 °F)
- Material in contact with the product :
AISI 316L (1.4404)
- Gasket in contact with the product (FDA homologation):
EPDM, FKM, MVQ(silicon), HNBR (other seals avaiable upon
request).
- Finish on surfaces in contact with the product :
Ra 0.8 µm (other types of surface finish upon request).
HANDELING
Based upon the weight of the valve it is necessary to use the appropriate carrying and restraining equipment (mobile
crane, fork lift, pump truck, etc.)
INSTALLATION
The valve must be fitted to the installation in such a way as not to cause flexing or torsion loads due to the weight of the
valve. It is advised to connect to the installation using tube work and materials at least consistent with the characteristics
equal to the valve itself.
USE
The opening and closing of the valve must be done slowly in order to avoid shock waves /air locks in the installation in
which the valve is fitted.
MAINTENANCE!
Make sure before carrying out any maintenance work that the installation to which the valves
are connected is isolated, and that there are no liquids remaining, and that the installation is not
pressurised.
The normal maintenance
consists of the replacement of the seals present within the valves.
PROBLEM
POSSIBLE CAUSE
POSSIBLE REMEDY
External leakage
Worn out gasket
Repalce gasket
Internal lekage with closed valve,
caused by normal wear
External lekage
Too high pressure
Repalce with gasket of different
elastomer type
Too high temperature
Internal with closed valve occuring
earlier than normal wear
Aggressive fluids
Modfy opeation conditions
Too many active control
Difficult opening
Incorrect elastomer type of gaskets
Replace with gasket of different elastomer type
PLANNED MAINTENANCE
VALVE GASKETS
Preventive
Replace after 12 months
In case of leakage
Replace at the end of the day
Periodical
Check for correct operation and absence of
leakage
Record all actions taken
SCrAppING AND DISpOSAL
For the scrapping of the valve proceed as follows:
-Disassemble all the valve’s components in order to separate it’s materials.
Before starting the mechanical scrapping procedure wash carefully all the parts of the valve.
The principal parts of the valve are:
VALVE BODY:
AISI 316L (4404)
SHUTTER:
AISI 316L (4404)
ELASTOMETER:
EPDM, FKM, SILICONE
For the scrapping of the valve the above listied materials are subject to the individual laws governing of the
countries in which the valves are to be scrapped.