Click image to view original image
Safety valve, quotes, standards, principles, Shanghai, safety valve, safety valve of imports, the standard safety valve
Yu Yu Valve Co., Ltd. Shanghai
Import safety valve safety valve safety valve standard safety valve Shanghai
About safety valve (safety valve) can automatically open and close under the pressure of work, usually installed in a closed system of pipeline protection equipment or system security. When the equipment or pipeline pressure exceeds the specified value, which automatically opens pressure relief, to ensure that the medium pressure equipment and piping within the specified value, to prevent accidents.
Classification of a safety valve:
Valve structure are two major categories: spring and lever type. Spring is the valve seal and valve seat by spring force. Leveraged rely on leverage and weight of the force. With the large capacity needs, but also a pulse valve, also known as pilot safety valve, safety valve from the main and auxiliary valve. When the pipeline pressure exceeds the pressure within the medium value, the auxiliary valve is first opened, the media along the catheter into the main valve and main valve open, so that increased media pressure is reduced.
Emissions depends on the safety valve seat diameter and height of the valve opening can also be divided into two types: opening height is inching valve seat diameter (1 / 15) ~ (1 / 20), the entire Kai is (1 / 3) ~ (1 / 4).
In addition, with different requirements, there are closed and not closed. Closed that the media does not exhaust leak, all along the discharge of export regulations are generally used for toxic and corrosive media. Is not generally used for non-toxic or non-closed corrosive media.
Safety valve series: spring safety valve, spring closed valve A42Y, closed safety valve with wrench A44Y, sulfur spring-loaded safety valve KA42Y, external thread safety valve A28Y, A41Y high-pressure stainless steel valve , high pressure safety valve A61Y, the main pulse valve YFA69H, pilot safety valve AX46Y, insulation jacket valve YFBA42Y, the main high temperature and pressure safety valve, A49Y double safety valve, safety relief valve, vacuum relief valve of legs safety valve safety valve sanitary valve copper
Note: Body material: cast iron cast steel, stainless steel, forged steel. Working pressure 1.6-32MPA (American Standard from 150LB-900LB, the superscript from 10K-64K). Operating temperature -20
