Ga49H-4 Dn25安全阀的相关说明与结构简述
安全阀的说明：
Ga49H-4 Dn25安全阀主要用于电站锅炉、压力窗口及减温减压装置等设备，有效防止压力超过允许压力值 ，保证设备安全运行。
Instruction
This valve is used for power plant boilers,pressure containers,pressure and temperature reducing device and other facilities.It serves to prevent the pressure exceeding the highest allowable pressure value and ensure the safety of the device when working.(本资料由青岛汇丰水暖器材有限公司整理)
Ga49H-4 Dn25安全阀结构简述：
1：通过杠杆和重锤来平衡阀瓣压力，达到阀门始终密封的状态，移动重锤的位置和改变重锤重量以达要求的起跳压力。
2：密封面用铁基铬镍不锈钢堆焊而成，阀瓣经热处理，提高了耐磨性和抗冲蚀性。
3：阀门上部带有开启和关闭的电磁铁，机械和电器动作互不干扰。(本资料由青岛汇丰水暖器材有限公司整理)
Structure briefing
1:The pressure of the disc is balanced through the lever and heavy hammer and the valve is ensured seal by moving the position of heavy hammer and changing weight of heavy hammer to reach the required set pressure.
2:The sealed surface is made of Fe base stainless steel by overlaying welding.Through thermal treatment,the wear resistance and anti-erosion of disc is improved.
3:At the top of valve is equipped and electromagnet to open and another to close the valve.The actions of the mechanism and the electric appliance are separate and will not affect each other.
Ga49H-4 Dn25安全阀安装说明：
1：本青岛安全阀阀门应与A49H-4型主安全阀进行配套使用。
2：脉冲安全阀安装时应是垂直的安全状态，杠杆应保持水平、与导向叉两我没忘记 面间隙要均匀。
3：脉冲安全阀在安装前首要工作是先冲洗干道管路。
4：脉冲安全阀引出管与主安全阀入口管间应保持一定的距离 ，电接点压力表和主安全阀入口管间的距离 ，不得小于5倍主安全阀入口管径，以避免主安全阀动作时，受排汽影响电接点压力表和脉冲安全阀工作的正确性。(本资料由青岛汇丰水暖器材有限公司整理)
Installation instruction
1.This valve shall be used with main safety valve a49H-4 together.
2:Impulse safety valve shall be installed vertically and the lever shall be kept level.The clearance from the lever to both sides of guide fork shall be even.
3:The popeline shall be washed clean before installing impulse safety valve.
4:A long distance between the leading pope of the impulse safety valve and the inler pipe of the main safety valve shall be kept.And the distance between the electric contact pressure meter and the inlet pipe of the
main safety valve shall be no less than 5 times of the diameter of the inlet pipr,for feat that the validity of themeter and the impulse safety valve may be affected by the steam releasing process of the main safety valve.
