many laypeople may not know raise safety valve. In fact, the safety valve is a safety protection Industrial Valves. The opening and closing parts under external force is usually closed, when the equipment or piping in the medium, pressure rise and open automatically when more than a specified value. Through the medium system, prevent the piping or equipment in the medium voltage exceeds the specified value. Micro micro and working principle of the safety valve and safety valve is a direct acting safety valve, only used for the liquid medium. Opening height within the scope of the flow paths of the diameter of the 1/40 to 1/20. Opening pressure ( The rated pressure) 。 The relief valve inlet pressure under the condition of operation began to rise, under the condition of the operation pressure begins with measurable opening height, and drying medium in the visual or auditory continuous discharge state. The exhaust pressure. Disc to specify opening height of inlet pressure. The cap on the discharge pressure depends on the relevant national standards or the requirements of the specification. More than pressure, exhaust pressure and opening pressure differences are usually expressed as a percentage of opening pressure. Back pressure. After discharge, disc and seat again contact, i. e. , when the opening height to zero inlet pressure. Opening and closing pressure difference. Open the difference between pressure and back pressure usually expressed as the percentage of back pressure and open, and when open the low pressure by the pressure difference between the two said.

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