排气后压力继续上升：这主要是因为选用的安全阀排量小于设备的安全泄放量，应重新选用合适的安全阀；阀杆中线不正或弹簧生锈，使阀瓣不能开到应有的高度，应重新装配阀杆或更换弹簧；排气管截有不够，应采取符合安全排放面积的排气管。
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