每一次调整时，调节：圈转动的幅度不宜过大（一般转动数齿即可）。每次调整后都应将固定螺钉拧上，使其端部位于调节圈两齿之间的凹槽内，既能防止调节圈转动，又不对调节圈产生径向压力。为了安全起见，在拨动调节圈之前，应使安全阀进口压力适当降低（一般应低于开启压力的90%），以防止在调整时阀门突然开启，造成事故。
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