Problems with pneumatic (hydraulic) actuation valves
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I have two questions: 1. For pneumatic valves that are powered by compressed air at a pressure of 0.22 MPa, the valve opens or closes very slowly after a remote command to do so is sent. 2. For hydraulic valves, the oil pressure is normal, but sometimes they respond slowly to commands to open or close, and in some cases they don’t open at all
Generally speaking, the response speed of hydraulic valves is much faster than that of pneumatic valves. Because hydraulic valves operate at high pressures, they are often used in locations where frequent opening and closing are required. Regarding the first question: What I have experienced is that, 1: the air pressure at the valve is too low; it can be increased appropriately. 2: The spring force acting on the valve diaphragm is too weak. To put it simply, either the spring’s elasticity is insufficient or there are fewer springs installed. 3: For issues with the locator, consult the instrumentation team to check what’s wrong with it. Second question: It’s likely there’s an issue with the switch response. These are some of the problems I have encountered; I would appreciate any guidance from those who are more experienced.