1KY50/320俄罗斯原装stanki舰船用液压锁天行健总代理
Standard pressure relief valves open when the pressure exceeds the setting of the relief valve but often one forgets that the relief valve has a certain response time. Oil and pistons must be accelerated and depending on the design the valve opens only after a certain stroke so within the response time the pressure can rise far beyond the setting of the valve. The severity of the pressure spike depends on the rate of pressure rise in the system. Often the real pressure spikes are much higher than one realizes as the reading is shown on a damped pressure gauge or sample rates of digital pressure transducers are too low.
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