弹簧式安全阀安装、使用说明书INSTALLATION AND USAGE MANUAL FOR THE SPRING SAFETY V ALVE杭州华惠阀门有限公司杭州阀门厂HANGZHOU WORLDWISE V ALVE CO.，LTD HANGZHOU V ALVE FACTORYSTAND：AUG ，2008弹簧式中、低压和次高压系列安全阀是我公司自行研制开发的主导产品之一，使用至今越来越受广大顾客的欢迎。
为了使各行业的顾客能更好地了解和使用我公司的系列安全阀，特制定本说明书，以便于安全阀的安装和使用。
Series Spring Safety Valve(spring style) in low、middle 、sub-high pressure is one of our leading products which is widely used in China. For better understanding and usage of the series safety valve, this manual explains the terms of installation and operation.一、安全阀的结构简介Safety Valve Structural Introduction1．以下的结构图示中:The following figures denote:图1为41型，封闭微启式；Figure 1 shows 41 type, sealed micro-lift type;图2为42型，封闭全启式；Figure 2 shows 42 type, sealed full-lift type;图3为44型，封闭全启式带扳手；Figure 3 shows 44 type, sealed full-lift type with spanner;图4为47型，非封闭微启式带扳手；Figure 4 shows 47 type, non-sealed micro-lift type with spanner;图5为48型，非封闭全启式带扳手；Figure 5 shows 48 type, non-sealed full-lift type with spanner;图6为48s型，非封闭全启式隔热架带扳手Figure 6 shows 48s type, thermal-insulated non-sealed full-lift type with spanner;图1 图2 图3Figure 1 Figure 2 Figure 3图4 图5 图6Figure 4 Figure 5 Figure 6二、安装、使用和调整Installation、Usage and Adjustment1．安装1、Installation安全阀安装前对管道必须进行彻底的清管吹扫处理。
Be sure blow-clean the pipe before installation.安全阀必须竖直安装，入口管的内径不小于安全阀的入口通径，并要有必要的支撑（见图7）The safety valve should be installed vertically, the inner-diameter of the inlet pipe should be more than the valve’s nominal diameter, the valve图7Figure 7出口排放管的内径应不小于安全阀的出口通径，排放的阻力应尽可能小，一般阻力压降小于整定压力的10％。
The inner-diameter of the discharging pipe should be more than the outlet nominal diameter of the safety valve. Discharge resistance should be as less as possible, resistance differential generally is less than 10% set pressure.排放管最低位置须安装疏水管，并且是单独的，禁止与其他疏水管相互串联。
A single water draining pipe should be installed at the bottom of the discharging pipe, no cross-connection with other pipe is allowed.当阀门配有水压压紧螺钉时，阀门参与容器或管路系统的水压试验时，可利用该螺钉按图示的方法旋在阀帽上以顶住阀杆，阻止阀门开启。
水压试验完毕后应将该螺钉从阀帽上旋下，如果可能最好勿将阀门参与容器或管路系统的水压试验。
If the safety valve with screwed nail participate the hydraulic test for the pressure vessel or pipe-line , rotate the nail to press the valve stem to avoid the valve opening. Remove the nail from the valve cap after test. the best method is the valve not participating the hydraulic test for the pressure vessel or pipe-line.在现场安装过程中，对阀门入口端的连接需特别注意（见图8）。
在入口端随安全阀附带了一件密封垫（柔性石墨复合垫），或者自配的入口处垫片其实际起密封作用的内、外圆应符合图8的要求，且须将此密封垫与安全阀的入口法兰端面对中心放置，目的将阀底座的一条配合间隙缝封堵掉。
在与配对法兰安装中要特别注意密封垫不能偏离中心，否则，介质将绕过密封垫通过配合间隙缝泄漏到阀门的出口端，而这个泄漏点常被误认为是安全阀的密封面泄漏。
Pay more attention to the inlet flange connection during installation (see Figure 8). A sealing gasket (soft graphite complex gasket) for the valve inlet flange should be concentrated to the inner and outside circles as shown in Figure 8 to shut the mated nap to avoid any leakage which isusually regarded as valve sealing leakage.同样高颈凹、凸面法兰相配合连接（见图9），其随安全阀附带了一件密封垫（柔性石墨复合垫），或者自配的垫实际起密封作用的内、外圆应符合图9的要求，目的将阀底座的一条配合间隙缝封堵掉。
A sealing gasket (soft graphite complex gasket) is also supplied for the connection of male and female neck flange (see Figure 9). The gasket should be concentrated to the inner and outside circles as shown in Figure 9 to shut the nap to avoid any leakage.图8 图9Figure 8 Figure 92．使用Usage应根据压力、温度、介质和排量等参数选择使用正确的阀门型号和规格。
当介质温度在350以上时，应选用带隔热架结构的安全阀。
Make sure to select correct valve type according to the specifications as pressure、temperature 、medium and discharge volume. A radiating safety valve should be selected if the medium temperature is more than 350.3．调整Adjustment阀门起跳（整定）压力的调整可利用阀帽内的调节螺套顺、逆时针旋转来调整（见图10）。
顺时针旋转可提高起跳压力，反之降低起跳压力。
在调整起跳（整定）压力时，必须降低安全阀入口端的压力，降低的数值一般为起跳（整定）压力的50％以下，并且要求有培训合格的专业人员进行。
The valve set pressure can be adjusted by rotating the adjusting sleeve inside the valve cap in clockwise or counter-clockwise direction (see Figure 10). Clockwise rotating makes the set pressure high, otherwise low. Pressure to the safety valve should be deducted (50% of the set pressure normally) before set pressure adjusting, and adjusted byFigure 10排放、回座压力（性能指标）的调整可利用体腔内的调节圈经顺、逆时针旋转来调整，具体调整方法如下：Discharging and blow-off pressure can be adjusted by rotating the adjusting ring inside the valve body in clockwise or counter-clockwise direction as follows:a)首先应降低阀门入口压力；Deduct the inlet pressure to the safety valve;b)拆除螺帽及螺帽内的紧定螺钉，当使用中、低压产品的单调节圈结构时（见图11），用螺丝刀等工具顺时针旋转调节圈（圈下移）可提高回座压力和排放压力，帮助阀门及时回座。
反之降低回座压力和排放压力，也不利于回座。
当使用次高压产品的双调节圈结构时（见图12），上圈逆时图11 图12Figure 11 Figure 12 针旋转（圈上移）可提高排放压力和回座压力，有利于阀门回座。