Does the check valve have a locking device?
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I saw in the information that the check valve requires the addition of PADLOCK. I have some questions. Isn't the check valve operated by the pressure of the medium itself? Is it necessary to add a locking device? How to add it?
The original poster has it. You can also add valve position feedback. If you need it, please contact me.
There are many types of check valves. You need to be more detailed. Nowadays, there is a check valve that is counterbalanced by a weight hammer and an oil cylinder. Its operation is not only affected by the medium, but also controlled by the oil cylinder. This kind of valve can be equipped with a lock.
The check valve mentioned by the poster may be a type of pressure double check valve. Its working principle is that the material must overcome the force of the spring on the check valve before it can pass. Otherwise, it cannot pass, which is equivalent to adding a locking device.