4、对于额定蒸汽压力小于或等于3.82MPa的锅炉，安全阀喉径不应小于25mm；对于额定蒸汽压力大于3.82MPa的锅炉，安全阀喉径不应小于20mm。5、安全阀一般应装设排汽管，排汽管应直通安全地点，并有足够的截面积，保证排汽畅通。安全阀排气管底部应装有接到安全地点的疏水管，在排气管和疏水管上都不允许装设阀门。R9007051973DREME10P-6X/315YG24K31VR9009614743DREME16P-6X/200YG24K31VR9009641693DREME16P-6X/200XYG24K31VR9009776473DREME10P-6X/200YG24K31VR9010263763DREME10P-6X/200XYG24K31VR9011036603DREME10P-6X/315XYG24K31VR9011659313DREME16P-6X/200YG24K31V-10R9012180973DREME10P-7X/200YG24K31F1VR9012299773DREME10P-7X/200XYG24K31A1VR9009486213DREE10P-6X/200YG24K31VR9009545173DREE10P-6X/100YG24K31VR9009545233DREE16P-6X/200YG24K31VR9009429513DREM10P-6X/200YG24K4V-1R9009436313DREM10P-6X/315YG24K4V-1R9009645183DREM10P-6X/315YG24K4VR9007690603DREM16P-6X/250XYG24K4V-2)