【脉冲式安全阀-上海埃克森阀门有限公司】脉冲式安全阀
产品名称：脉冲式安全阀
脉冲式安全阀产品概述：
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，防止压力超过允许最高压力值，保证设备安全运行。结构简述：
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。安装说明：
1、本阀门应与A49H-4型主安全阀配套使用。
2、脉冲安全阀安装时应严格垂直，杠杆应保持水平，与导向叉两侧面间隙必须均匀。3、脉冲安全阀安装之前，应将管路冲洗干净。
4、脉冲安全阀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。外形尺寸和连接尺寸公称通径DN(mm)
尺寸(mm)D
25
115
D185
D265
D358
Z-Фd4-14
H190
H2125
L 100
L1100
Lo 670
Instruction
This valve is used for power plant boilers, pressure containers,pressur e and temperatur e reducin g device and othe r facilitie. It se r ve s to pr e ve n t th e pr e ssu r e e xce e d i n g th e hig h e s t all owa b l e pressur e value and ensur e the safety of the device when working.
Structure piefing
1. The pressure of the disc is balanced through the lever and
heavy hammer and the valve is ensured seal by moving the postiton of heavy hammer and changing the weight of heavy hammer to reach the required set pressure
2. The sealed surfac e is made of Fe base stainless steel by over-laying welding. Through thermal treatment, the wear resistance and anti-erosion 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 electric applianc e are separate and will not affect each other.
Installation instruction
1. This valv e shalll be used wit h mai n safet y valve A49H-4
together.
2. Impuls e sefety valv e shal l be installe d vertically and the lever shall be kept level. The clearance from the lever to both sides of guide fork shall be even.
3.The pip elin e shall be washe d clean before installing imp-ulse safety valve.
4. A long distance betw een the leadi ng pipe of the impulse safety valve and the inlet pipe of the main safety valve shall be kept. An d the distan c e be tw ee n th e electri c co nta ct pre ssu r e mete r and the inle t pip e of the mai n safet y valv e shal l be no les s tha n 5times 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.