The owner requires a shut-off valve at the 54 flushing inlet
Thread Content
I have been working at a pump factory for 5 years and have never encountered cut-off valves. I searched on Baidu, and all the information I found related to electric cut-off valves used in natural gas systems. Could you experts tell me how to select a cut-off valve for a flushing system?·······
It can be configured freely; in short, it’s an automatic device. Pneumatic or electric, whatever you prefer. For details, it would be best to attach images to facilitate discussion.
There are no pictures; I would like to ask how this cut-off valve should be configured
Usually, a pneumatic diaphragm butterfly valve or ball valve is installed on the pipeline, along with an accompanying actuator; an electromagnetic valve is sufficient for this purpose. When buying valves, the supplier will meet your requirements.
Valves cannot be installed on the flushing pipeline, as it is an important constant-open pipeline; improper operation could lead to serious failures of the pump
Valves can be installed, but filters are installed at the inlet, along with shut-off valves and check valves; I don’t understand why another shut-off valve is needed at the outlet. The preliminary materials weren’t done by me; someone else did them
What is the purpose? 54 indicates internal leakage after a failure, and it is not dangerous. On the contrary, a shut-off valve has been added to enable emergency shutdown in case of an accident; if the pump does not stop in time, it will be even more dangerous
I don’t understand either; I can’t figure it out. It seems like it’s done on purpose to tease people
From the owner’s description, it seems that an emergency shut-off valve should be installed on the sealant return pipe. I’ve seen some flow diagrams in which shut-off valves are placed on the inlet pipes; I haven’t seen any with shut-off valves installed on the return pipes. In fact, selecting a valve is not difficult; if there is instrument air available on site, a start-stop ball valve will suffice ； If there is no instrument air, an electric ball valve or solenoid valve can also be used. Before doing so, it is necessary to understand the designer’s or owner’s rationale for installing this valve, as well as whether its removal will affect the safety of the system. Attached is a picture of another project: