Explain why two valves are used
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Explain why two valves are used
There’s not enough information shown to make a judgment… One adjustment, or one cut-off?
It’s a bit similar to a DBB valve. Speculative......
One is a control valve, and the other is an interlock shut-off valve.
If the only concern is that the control valve cannot be closed properly and thus causes leaks, is it still necessary to add a solenoid valve? Can an electromagnetic valve be directly connected to the air supply of the control valve? Will the effect be the same?
It’s probably to prevent safety accidents that could occur due to high voltage leaking into low voltage
Double cut! I have seen such installation sites, where there is also a pressure transmitter between the two valves to detect whether there is internal leakage in the valves.
Your type is not suitable for here; testing requires an automatic relief valve, and this one only has a manual one
The effects are certainly different: when the solenoid valve is installed at the point where the valve is connected last, it helps with rapid exhaust; whereas when it is installed on the air supply, there are components such as pressure regulators and positioners in between, making exhaust difficult.