Maintenance 1, for the rated steam pressure less than or equal to 3.82MPa boiler safety valve throat diameter of not less than 25mm; For the rated steam pressure is greater than 3.82MPa boiler safety valve throat diameter of not less than 20mm. 2, the valve should normally be installed exhaust pipe, exhaust pipe should be through a safe place, and there is sufficient cross-sectional area of ??Shandong with radiator spring safety valve to ensure the exhaust flow. Valve exhaust pipe at the bottom should have received a place of safety posturing drainage pipe, the exhaust pipe and the installation of drainage pipe valves are not allowed. Maintain a rated evaporation to 0.5t / h boiler, installed at least two safety valves; Rated evaporation is less than or equal to 0.5t / h boiler, at least install a safety valve. Separable at the economizer outlet, the outlet of the steam superheater safety valve must be installed. 2, on the explosive or toxic media pressure vessel, the safety valve must be exhausted medium and recovery system safety devices. Install safety valve lever position must be maintained plumb Shandong valves, valve springs are best installed vertically, so as not to affect their actions. It should also be noted when installing fit and concentricity of parts so that each bolt should be uniform force. Maintain a safety valve to prevent the hammer have their own mobile devices and limit leverage deviant guides, spring safety valve should enhance handle and prevent casual twist adjustment screw devices. 2, it should be mounted vertically in the highest position in the pot business, collection boxes. Between the valve and the drum or header shall be equipped with access steam outlet pipe and valves. 3, the connection pipe and the boiler safety valve, its cross-sectional area not less than the cross-sectional area of ??the valve imported. If several valves installed together on a short tube directly connected with the drum, short tube channel cross-sectional area should not step on all exhaust valve area 1.25 times. Shandong valve | safety valve | valve model provided by Everbright Everbright Valve Co., Ltd., Shandong. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve into the brilliant and you work for a better future!