GA49H pulse valve

【GA49H脉冲式安全阀】概述：
    GA49H脉冲式安全阀主要用于电站锅炉、压力容器、减温减压装置等设备，防止压力超过允许zui高压力值，保证设备安全运行。
    GA49H pulse valve is mainly used in power station boilers, pressure vessels, temperature and pressure reduction devices and other equipment, to prevent the pressure exceeds the allowable maximum pressure to ensure the safe operation of equipment.
【GA49H】原理：

    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。
    By balancing valve flap lever and hammer to pressure, the valve to ensure sealing; moving and changing the position of the hammer hammer weight to achieve the required pressure off.
【GA49H】结构特点：

    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；上部带有开启和关闭的电磁铁，机械和电器动作互不干扰。
    Sealing surface with iron-chromium-nickel stainless steel base made ​​of heat-treated valve to improve the wear resistance and erosion resistance; upper electromagnet with open and closed, mechanical and electrical operation of interfering.
【GA49H】使用说明：
1、GA49H应与A49H-4型主安全阀配套使用。
1, GA49H pulse valve should A49H-4 type main valve supporting.
2、安装时应严格垂直，杠杆应保持水平，与导向叉两侧面间隙必须均匀。
2, pulse valve installation should be strictly vertical, leverage should remain level with the sides of the guide fork gap must be uniform.
3、安装之前，应将管路冲洗干净。
3, before the pulse valve installation, the pipeline should be rinsed clean.
4、引出管与主安全阀的入口管之间应保持一定较长的距离，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, the pulse valve leads to longer should maintain a certain distance between the tube and the main valve inlet tube from the electrical contacts and the main valve between the inlet pipe shall not be less than five times the diameter of the main valve inlet in order to avoid the main safety valve, because the exhaust pulses affect the electrical contacts and work safety valve correctness.

【GA49H】连接尺寸及结构图：

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