原文：
锅炉上安全阀安装应符合要求： (l)额定蒸发量大于0.5t/h的锅炉，至少装设两个安全阀：额定蒸发量小于或等于0.5t/h的锅炉，至少装一个安全阀。可分式省煤器出口处、蒸汽过热器出口处都必须装设安全阀。 (2)安全阀应垂直安装在锅商、集箱的{zg}位置。在安全阀和锅筒或集箱之间，不得装有取用蒸汽的出口管和阀门。 (3)杠杆式安全阀要有防止重锤自行移动的装置和限制杠杆越轨的导架，弹簧式安全阀要有提升手把和防止随便拧动调整螺钉的装置。 (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)安全阀与锅炉的连接管，其截面积应不小于安全阀的进口截面积。如果几个安全阀共同装设在一根与锅筒直接相连的短管上，短管的通路截面积应不步于所有安全阀排汽面积的1.25倍。 (6)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腔作势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。

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译文：
Boiler safety valve installation should meet the requirements: (L) Rated evaporation at 0.5t / h boiler, installed in at least two safety valves: Rated evaporation less than or equal 0.5t / h boiler, install at least one safety valve. Can be divided into Economizer exit steam superheater safety valve outlet must be installed. (2) safety valve should be installed vertically in the pot business, set top box location. In the safety valve and between the drum or header shall be equipped with access to the export of steam pipes and valves. (3) safety valve should be leveraged to prevent the hammer on their own mobile devices and to limit leverage deviation of the lead frame, the spring-loaded safety valve should raise Screw the handle and adjust the screw to prevent the random device. (4) for the rated pressure of less than or equal to 3.82MPa steam boiler safety valve throat diameter of not less than 25mm: for rated boiler steam pressure is greater than 3.82MPa, safety valve throat diameter not less than 20mm. (5) safety valve connected with the boiler tubes, their cross-sectional area shall be not less than the import safety valve cross-sectional area. If several valves installed together with the drum in a pipe directly connected to the short, short cross-sectional area of access control should not step in exhaust all the safety valves 1.25 times the area. (6) safety valve should normally be installed in exhaust pipe, exhaust pipe should be through a safe place, and with sufficient cross-sectional area to ensure that exhaust flow. Exhaust valve at the bottom should have received a place of safety posturing of drainage pipe, the exhaust pipe and not allow the installation of drainage pipe on the valve.