Gear pump safety valve basic technical requirements: 1) set pressure greater than 3.0Mpa steam safety valve or medium temperature is greater than 235 ° C air or
Other gas safety valve, should be able to prevent the discharge of media directly erosion spring. 2) The gear pump steam safety valve must be equipped with a wrench. When the medium pressure reaches 75% of the setting pressure, the wrench can be used to lift the valve disc. The wrench should not impede the valve movement. 3) The safety valve for toxic or flammable media must use a closed safety valve, and to prevent the valve cover and cover gasket leak. 4) To prevent the adjustment of the amount of spring compression mechanism loose, and feel free to change the pressure has been adjusted, must be provided with anti-loose device and seal. 5) gear pump valve seat should be fixed on the valve body, not loose, all-opening safety valve should be provided with a mechanism to limit the opening height. 6) Gear pump safety valve even if there is some damage, should be able to reach the rated displacement, when the spring is damaged, the valve and other parts will not fly out of the valve body. 7) For the safety valve with additional back pressure, the back pressure balance mechanism should be set according to the size and variation of pressure. 8) gear pump pilot-operated safety valve should be pilot and main valve for sealing and opening action test, should meet the performance standards required.
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