Impulse safety valve
Model: GA49H/F2/A69Y ;
Diameter: 25mm
Medium: Steam
Pressure: ¡Ü4MPa
Applicable Temperature: ¡Ü420¡ãC
Body Materials: Carbon steel etc.
Applicable Industry: Urban
 Construction,Chemical,metallurgy,Oil,Pharmaceutical,Food,Beverage,Environmental protection

 Usage
 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 pres-sure
 value and ensure the safety of the device when working.
 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 for ton 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 overlaying 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 appliance are separate and will not affect each other.
 Installation instruction
 1、This valve shall be used with main safety valve A49H-40 to-gather.
 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 pipeline shall be washed clean before installing impulse safety valve.
 4、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 mater and the impulse safety valve may be affected by the steam releasing process
 of the main safety valve.