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原文
Boiler safety valve installed on the technical requirements Boiler safety valve installed shall meet the requirements: (l) Rated evaporation at 0.5t / h boiler, installation of at least two safety valves: rated capacity less than or equal to 0.5t / h boiler, at least install a safety valve. Can be divided into type economizer outlet, the steam superheater outlet safety valve must be installed. 2) The safety valve should be installed vertically in the pot business, set top box location. And the safety valve between the drum or set of boxes, not with access to the export of steam pipes and valves. 3) have a lever-type safety valve to prevent the hammer on their own mobile devices and limit lever deviant lead frame, spring-loaded safety valve to prevent the need to enhance the grip and just twist the screw to adjust the device. (4) for the rated steam pressure less than or equal to 3.82MPa boiler, safety valve throat diameter of not less than 25mm: For more than 3.82MPa rated boiler steam pressure, safety valve throat diameter of not less than 20mm. (5) boiler safety valve and connecting pipe, the cross-sectional area should not be less than the cross-sectional area of ??the safety valve of imports. If several valves installed together with the drum in a pipe directly connected to the short, short tube channel cross-sectional area of all safety valve should not step in exhaust area of 1.25 times. (6) safety valve should normally be installed exhaust pipe, exhaust pipe should be through a safe place, and there is sufficient cross-sectional area to ensure smooth flow of exhaust. Safety valve exhaust pipe at the bottom should have received a place of safety posturing drainage pipe, drainage pipe in the exhaust pipe and are not allowed to install on the valve.
原文来自：http://www.anquanfa.org

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译文：
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、集箱的最高位置。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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