1, the pressure relief valve before delivery, should by Taiwan to adjust its opening pressure to the user's setting. If users spring pressure level, according to the general should be adjusted by the lower limit of pressure level of the factory. 2, the user in the relief valve installed on the protected equipment before or before installing, adjustment must be installed in the scene, to ensure that relief valve set pressure value meets the requirements. Level 3, work in a nameplate indicating the spring pressure range, by rotating adjustment screw to change the spring compression, the opening pressure can be regulated. 4, before the rotation adjustment screw, should make the valve inlet pressure is reduced to below 90%, opening pressure to prevent rotation adjustment screw when the disc is driven to rotate, so that damage the sealing surface. 5, to guarantee the accuracy of the opening pressure value, should be adjusted when the medium conditions, such as the type of medium, and the liquid temperature as close as possible to the actual operating conditions. Medium type change, especially when the accumulated state of the medium is not at the same time, For example, from a liquid into a gas phase) , the opening pressure often change. Work at higher temperatures, the opening pressure generally reduced. Reason at room temperature adjustment and used in high temperature, the temperature of the set pressure value should be slightly higher than the requirements of opening pressure values. High to what extent and valves are relationship, structure and material selection should be according to manufacturer's instructions. 6, regular fixed additional back pressure relief Industrial Valves used in occasions, when opening pressure adjustment after the inspection, The back pressure to atmospheric pressure) , the setting value shall be the requirements of opening pressure value minus the superimposed back pressure.
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