Selection of safety valve:

1. High temperature and High Pressure safety valve, generally open and open type spring Italian OR series;

2. Liquid medium with air conditioning, generally used micro-lift spring air conditioning safety valve series;

3 air or other gas medium with air conditioning safety valve, generally selected closed full spring air conditioning safety valve;

4.Air-conditioning safety valves for liquefied petroleum gas vehicle tankers or liquefied petroleum gas railway tankers are generally equipped with fully-installed air-conditioning safety valves.

5. Air-conditioning safety valves for the outlet of production wells are generally pilot-operated air-conditioning safety valves;

6. High-pressure bypass air-conditioning safety valve for steam power generation equipment, generally used pilot-type air-conditioning safety valve with safety and control dual function 7. If air-conditioning safety valve is required to do periodic opening test, air-conditioning safety valve with lifting wrench should be used. . When the media pressure reaches more than 75% of the opening pressure, the valve flap can be lifted slightly from the valve seat with a lifting wrench to check the flexibility of opening the air conditioning safety valve;

8. If the medium temperature is high, in order to reduce the temperature of the spring chamber, when the temperature of the enclosed Italian OR air-conditioning safety valve exceeds 300°C and the use temperature of the open air-conditioning safety valve exceeds 350°C, the radiator with heat sink should be used. Air conditioning safety valve;

9. If the back pressure of the air-conditioning safety valve outlet is changed, and the change amount exceeds 10% of the opening pressure, the air-conditioning air-conditioning safety valve shall be selected;

10. If the medium is corrosive, an air-conditioning safety valve should be used to prevent failure of important parts due to media corrosion.