Problems with pneumatic control valves
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Are both of these pneumatically operated control valves? Is there airflow but no exhaust?
These are two three-way solenoid valves; the first image is not clear, while the second image shows FC
1. Pneumatic valves, hydraulic valves, and solenoid valves: the icons show their positions in the absence of air, hydraulic pressure, and electricity. The current position of the valve can be determined based on the diagram and the on-site conditions ； 2. CYL cylinder (CYLINDER), EXH exhaust (EXHAUST), IN intake; arrows indicate the connection points ； 3. Currently, it appears that both pneumatic control valves have lost pressure and are drained; as for the state of the valves themselves, it is necessary to determine the location of the fault.