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
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
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
Adjust the screw
Sealing surface material
"H" surfacing D507, "Y" surfacing Co-based cemented carbide
A47H -type spring with a wrench spring-type safety valve main dimensions