A47H type with a wrench spring micro -type safety valve structure brief
 1, spring micro-type safety valve has the advantages of simple structure, good sealing performance, opening pressure is accurate, discharge capacity, back to the seat pressure is small, easy to adjust and so on. 
 2, nozzle-type valve seat: seat for the seat nozzle valve seat, the steam flow through the seat outlet to reach the speed of sound, emission factor, seat sealing surface surfacing Cobalt Chromium tungsten carbide wear-resistant impact Erosion, long life. 
 3, Thermo-elastic disc: The disc is designed as a thermo-elastic structure, using its slight deformation under medium pressure to improve the sealing ability and overcome the pre-vent phenomenon when the safety valve approaches the setting pressure under medium pressure. Valve sealing surface using advanced laser quenching technology to improve the hardness, wear resistance, impact resistance. 
 4, adjusting nut: By adjusting the adjusting nut, adjust the amount of spring compression, so that the valve can be very convenient, very quickly get accurate setting pressure. 
 5, back pressure adjustment sets: adjust valve back pressure auxiliary agencies, through the back pressure adjustment sleeve adjustment, access to the appropriate back seat pressure. Increase the valve back pressure to reduce. Lower the valve back pressure.
 

A47H type with a wrench spring-type safety valve installation instructions
 1, the safety valve must be mounted vertically, and the best direct installation in the container or pipe joints. Connector diameter should not be less than the safety valve inlet diameter. 
 2, the safety valve outlet must be fitted with appropriate expansion joints to prevent the thermal expansion of the discharge pipe to the safety valve to bring undue thermal stress. The discharge pipe diameter should be larger than the valve outlet diameter, the length as short as possible to avoid turning. The discharge pipe and expansion joint weight should not act on the safety valve, should be fixed in the building. The distance between the centerline of the discharge pipe and the centerline of the valve body should be as short as possible. For each safety valve should be installed separately discharge pipe. 
 3, muffler exit to have enough area to prevent back pressure affect the discharge capacity of the valve.
 

A47H type wrench spring micro - Kai safety valve main parts and materials

 A47H -type spring with a wrench spring-type safety valve main dimensions