Steam safety valve pressure pipeline is a kind of special equipment safety device, the safe operation of the steam piping, special valves, safety protection according to the setting pressure set by the we give it to protect the piping work, in normal operation, steam safety valve open-close part belongs to the closed position, when pressure is more than what we have set the set pressure value, steam safety valve start to work, have a tiny qi type with full rev type two kinds of open means, once open, steam through drains out emissions, prevent steam pipe pressure more than we set value. Setting pressure adjustment specifications 1, according to pressure spring; Used by different pressure levels of steam safety valve spring specification is different, the higher the pressure, the spring more thick, the lighter pressure, spring is fine. 2, according to spring compression degree; By manual rotation adjustment screw to change the spring tighten, spring compression tight, the higher the set pressure, on the contrary, low pressure circumstances, the need to loosen the spring. 3, opening pressure regulating specification: spring pressure, the higher the reverse thrust of the spring and line pressure to set pressure value can only be opened, on the other hand, the lower spring reverse thrust, said set pressure is low. 4, debug pressure before delivery; Steam safety valve before they go out, must be in strict accordance with the provisions of the pressure value for its debugging, adjust to the requirements of the opening pressure to the setting value. 5, put forward setting pressure in advance; Work if there is a spring pressure level is relatively low must be made in advance, if not adjusted by the lower limit value of general classes. 6, according to the actual use; Steam safety Industrial Valves before installation must be used according to actual circumstances, back on the relief valve for debugging, testing, to achieve specified pressure value can only be installed on the site. 7, the third party inspection, testing; Accords with a requirement in order to ensure the safety valve of the pressure value, may, when necessary, through a third party inspection, testing, and need to be recorded, as a convenient access to records after adjustment. Note 8, additional back-pressure value; As for fixed additional back-pressure condition in the system, you need to open the setting pressure value deducting additional back-pressure value, adjust the opening pressure ( The back pressure to atmospheric pressure) 。
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