当通过阀门的压降为管路压力的20%左右时,美国克雷恩截止阀就能够高效应用在频繁操作和节流的应用场合。如果节流较小,将因此产生更高的压降将可能导致空穴现象或超快流速,从而导致噪音太高,振动剧烈,可能损坏阀门或相邻的管路。这些截止阀可配置备选执行机构和广泛的阀内件,以满足实际应用要求。
Crane globe valves are highly efficient for services
requiring frequent operation and throttling when pressure drop across
the valve is about 20% of inlet pressure. Closer throttling, creating
higher pressure drops may cause cavitation or excessive velocities which
could cause high noise levels, vibration and possible damage to the valve
or adjacent piping. Globe valves can be equipped with optional operators
and are available with a variety of trims to match service requirements. |