Hello! This is Nick  from NEFSS . Today, I would like to introduce the Pneumatic Time Delay Valve , an essential component for industrial sites—especially in explosion-proof zones or areas requiring precise pneumatic control. Often referred to as an "Air Timer," this device is a mechanical delay unit that operates solely on compressed air, without any electrical signals. The photos shown here are of the actual units I personally photographed while working at YNV . I have witn