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1. Rethink your control valve maintenance.
   采用新的诊断工具提高控制阀维修的可靠性。
2. Install a shutoff valve upstream of the regulator.
   在调节阀的上游安装关闭阀。
3. If uneven pressure should cause the regulator to pulsate, its action can be stabilized by throttling the valve.
   如果不稳定的压力导致调节阀波动，则这种波动通过对阀门节流将稳定下来。