Safety valve selection: 1. High temperature and high pressure safety valve, the general choice of open all-spring Italy OR series; 2. Liquid medium air conditioning, the general selection of micro-spring-type safety valve air spring series; 3. Air or Other gas medium Air-conditioning safety valve, the general selection of fully enclosed spring-loaded safety valve; 4. Liquefied petroleum gas tank car or liquefied petroleum gas railway tank truck with air-conditioning safety valve, the general use of Kai-type built-in air-conditioning safety valve; Air-conditioning safety valve, the general selection of pilot-operated air-conditioning safety valve; 6. Steam generating equipment, high-pressure bypass air-conditioning safety valve, the general use of safety and control dual function pilot-operated air-conditioning safety valve 7. If required to air- Test, should be selected with a wrench air conditioning safety valve. When the media pressure reaches more than 75% of the cracking pressure, lift the valve flap slightly from the valve seat to check the flexibility of the air conditioner safety valve. 8. If the medium temperature is high, in order to reduce the spring chamber Of the temperature, usually when the closed Italian OR air-conditioning safety valve temperature exceeds 300 ℃ and open air-conditioning safety valve temperature exceeds 350 ℃, should be used with air conditioning safety valve radiator; 9. If the air conditioning relief valve outlet back pressure is Change, the amount of change more than 10% of the opening pressure, air conditioning and air conditioning safety valve should be used; 10. If the medium is corrosive, air conditioning safety valve should be used to prevent important parts due to media corrosion failure.
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