法兰安全阀

GA49H  DN20

说明 Instruction

主要用于电站锅炉、压力容器、减温减压装置等设备，防止压力超过允许最高压力值，保证设备安全运行。
The 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.

结构简述 Struture briefing

1、通过杠杆和重锤来平衡阀瓣的压力，使阀门保证密封，移动重锤的位置和改变重锤的重量来达到要求的起跳压力。
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。
1.The pressure of disc is balanced through the lever and heavy hammer and the valve is ensured seal by moving the position of  heavy hammer and changing the weight of  heavy hammer to reach the required set pressure.
2.The sealed surface is  made of Fe  base stainless steel by  overlay-ing welding. Through thermal treatment,  the hardness of  disc is improved.
3.At the top of valve is equipped an electromagnet to open and another to close the valve.  The actions of  the mechanism and  the elec-tric appliance are separate and will  not affect each other.

安装说明 Installation instruction

1、本阀门应与A69Y-PW5410V型,DN150主安全阀等配套使用。
2、脉冲安全阀安装时应严格垂直，杠杆应保持水平，应将管路冲洗干净。
3、脉冲安全阀引出管与主安全阀的入口管之间应保持一段较长的距离，电接点压力表和主安全阀入口管之间的距离，不得小于5倍主安全阀入口管径，以免主安全阀动作时，因排汽影响电接点压力表和脉冲安全阀工作的正确性。
4、该阀与电磁铁一起装在一个专门的支架上，阀门上杠杆与电磁铁连接要灵活，不得有卡涩现象。 
1.This  valve shall be used with main safety valve A69Y-PW54 10V,  DN150 together.
2.  Impulse safety valve shall  be installed vertically and the lever shall be level. The pipeline shall be washed clean.
3.  A long distance between  the leading pipe of  the impulse safety valve and  the inlet 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 pipe, for  feat that the validity of the meter and  the impulse   safety valve may  be affected by the steam releasing process of the main safety valve.
4.  The valve and the electromagnets shall be placed together on a special gallow. The juncture of the valve and the electromagnets shall be flexible,  with no phenomenon of seizure.