Can a bypass valve be installed on the cut-off valve of the emergency stop interlock?
Thread Content
Can a bypass valve be installed for the shutdown interlock of the SIS? Should a bypass valve be provided?
It’s possible, as long as your bypass can be used
Not all valves are very reliable; it’s better to install a bypass for safety
The purpose of the emergency shut-off valve is to quickly disconnect the tank from the external system under predetermined conditions; as a general rule, this valve does not require a bypass valve. I don’t know why a bypass valve was designed.
It seems to be something related to the design institute; it has little to do with instruments, right?
No, only a soft bypass (PLC logic) is possible
Emergency shut-off valves generally come equipped with a manual function
No bypass is designed, but the valve comes with a handwheel
For valves that shut off in case of a failure, why is a bypass valve needed? If there is a bypass valve, what’s the purpose of the shut-off valve in case of internal leakage??? There can be manual valves at both the front and back.