According to the State Bureau of Quality Supervision Boiler and Pressure Vessel Supervision Bureau promulgated the "steam boiler safety technology supervision order states:" The boiler safety valve at least once a year should check ";" Electric Power Industry Boiler and Pressure Supervision "container ((DL612-1996 ) 9.1.13) states: "After the boiler safety valve installation and overhaul of completed and reconditioned Weifang high temperature and pressure valves, pressure should check the safety valve from the seat," (and clearly defined "rules monitoring range: f) heat system pressure Containers: high and low pressure heaters, deaerator, and other various types of expansion "; State Power Corporation promulgated the" power to prevent major accidents produce 25 key requirements, "states:" all kinds of pressure vessels safety valve should be regularly check and emission test. " These provisions are very clear on power plant safety valve regularly check work. This type valve in the pipe should generally be installed horizontally. 1. faults and eliminate leaks. Price high temperature and pressure valves, more than allowed levels of leakage between the valve seat sealing surface equipment to work under pressure. The reasons are: dirt between the valve seat sealing surface. You can use a wrench to open the valve lift several times, rushed to the dirt; sealing surface damage. Should be based on the degree of damage, the use of grinding or turning grinding method to repair; stem bending, tilting or deflection lever and fulcrum, the valve body and the valve flap dislocation. Should be re-fitted or replaced; spring elasticity or loss of elasticity. Should be taken to replace the spring, readjust the opening pressure and other measures. 1. faults and eliminate leaks. High temperature and high pressure valves offer, more than allowed levels of leakage between the valve seat sealing surface equipment to work under pressure. The reasons are: dirt between the valve seat sealing surface. You can use a wrench to open the valve several times to enhance the high temperature and pressure valves, rushed to the dirt; sealing surface damage. Should be based on the degree of damage, the use of grinding or turning grinding method to repair; stem bending, tilting or deflection lever and fulcrum, the valve body and the valve flap dislocation. Should be re-fitted or replaced; spring elasticity or loss of elasticity. Should be taken to replace the spring, readjust the opening pressure and other measures. Weifang high temperature and pressure valves, Shandong Everbright valves, high temperature and high pressure valve provided by the Shandong Everbright Ltd. valve. Weifang high temperature and pressure valves, Shandong Everbright valves, high temperature and high pressure valves Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact phone book pages or pictures on request The latest information, contact: Manager Ma.