Safety valve and the boiler drum, between the tanks - like shutoff valve shall be installed, or access to steam out pipe. Between the valve and the pressure vessel - like closing the valve should be installed or other out pipe; for costumes for the high degree of toxicity, high, moderate hazards, flammable, corrosive, viscous media or media pressure vessel Weifang precious valves, After using the unit in charge of the pressure vessel technical director approval and to develop reliable preventive measures before between the valve and the pressure vessel fitted with a shutoff valve. During normal operation of the pressure vessel and shut-off valve must be kept open, add seals or locks. Shutoff valve structure and path valve, safety relief valve should not interfere in. Faults and eliminate open when the pressure is not specified. Valve Co., Ltd. Shandong Everbright tell you safety valve, the cause of this situation is the constant pressure allowed. Or should readjust the position of the hammer spring compression; valves and valve seat stick. Should regularly deflate valve for manual or drain test; leveraged safety valve is stuck or hammer lever is moved. Should readjust the position of the hammer and lever moves freely. Spring safety valve opening, closing operation is medium pressure change and the spring preload to its inlet end of the spool to automatically open and close. When the medium pressure (internal pressure) rises to a lifting force greater than the spring preload, the spool against the spring preload automatically open, vent excess media, the internal pressure drop, but also because of the spring force of a spring with a handle safety valve, when the internal pressure dropped to a safe value, the valve closes automatically stop the bleed. Shandong valve _ Everbright valve (certified) _ safety valve provided by Shandong China Everbright Limited valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) Shandong Weifang, ball leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Everbright valve leadership with the staff warmly welcome all inquiries negotiations to create a better future for China Everbright valve.