(GB-IST-BBZK-0910) 8/26
BARDIANI VALVOLE reserves the right to modify without notice its products, including products already ordered.
5. Operation
6. Troubleshooting
Risk of
corrosion
stainless steel
Pneumatic connection
6. CHECK THE VALVE BEFORE OPERATION
- Supply the actuator with air.
- Open and close the valve several times.
- CVheck that the valve can work properly nd smoothly.
1. VALVE TROUBLESHOOTING:
Always study operating and maintenance
intructions carefully before troubleshooting.
2. REPLACING WORN VALVE PARTS:
- See page 12 for ordering spare parts.
Risk of damaging
the elastomers
PROBLEM
POSSIBLE CAUSE
POSSIBLE REMEDY
External leak
Worn gasket
Replace gasket
Internal leak with closed valve, caused
by normal wear
External leak
Excess pressure
Replace with gasket made of a different
type of elastomer
Excess temperature
Early internal leak, with closed valve
Aggressive fluids
Modify working conditions
Too many controls enabled
Difficult opening and closing
Wrong type of gasket elastomers
Replace with gasket made of a different
type of elastomer
Wrong positioning of the actuator
Mount the actuator properly
Improper operation of the actuator
Shift from normally closed to normally
open or vice-versa
Dirty actuator
Service the actuator
Improper positioning of the valve body
Disassemble and re-install the valve
body
