Import and export pipeline safety valve (1) and the boiler or pressure vessel safety valve between the connecting pipe and fittings through-hole, and its cross-sectional area of ??not less than the cross-sectional area of ??the valve imported; if you share a few safety valve inlet pipe, the import and the cross-sectional flow area of ??the pipe is not less than the cross-sectional area of ??the inlet valve. (2) the use of a spring-loaded safety valve threaded connection, to connect with a short pipe with threaded pipe and simplified and short inter-header to be welded connections. Safety valve discharge pipe must be installed. To try to avoid the discharge tube twists and sharp turns to minimize drag. To discharge tube through a safe place, and there is sufficient cross-sectional area of ??the flow, to ensure the smooth flow of the exhaust. For a chemical reaction can interact safety valve safety valve, can not share a discharge pipe; when the safety valve is installed in a corrosive, combustible gas equipment A28H with handle safety valve, should be taken when corrosion emissions ignition or explosion prevention measures; when the safety valve device is installed within the toxic media, and the vapor density of the medium is greater than the density of air, the medium and steam discharged from the safety valve to be introduced into the closed system, and recovering from the closed system into production use. Safety valves are widely used in various industries of the national economy, as boilers and pressure vessels and piping safety accessories, in accordance with the national "Pressure Vessel Safety Technology Supervision" requirement, "safety valve should check at least once a year in general." However, the current petrochemical, chemical and other companies more than a year of continuous operation means A28H safety valve with handle quotes, or even two, three, to achieve parity once a year is difficult; some devices are run continuously, without maintenance period; in addition A28H valve, safety valve on the unit is running fails require removal and replacement without stopping the machine is also difficult to achieve. To this end, developed a safety valve fast switching device that can achieve non-stop fast valve replacement purposes. Safety valve, safety valve with handle spring valve model Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) in this field ball devoted boundless enthusiasm and passion, Everbright valve has been customer-centric, the idea of ??creating value for customers, quality and service to win the market, and sincerely hope to work with the community to create success, create brilliant. Welcome to the relevant business information, Contact: Manager Ma.