Maximum working temperature and normal working temperature: The design temperature of the hot air valve is determined according to the maximum working temperature, which is higher than the maximum working temperature. The long-term working temperature of refractories is higher than the maximum working temperature.
Normal working pressure and maximum working pressure: the maximum working pressure of the valve tests the rigidity of the valve, especially the large-caliber valve. Insufficient rigidity directly affects the sealing performance of the valve and the bonding strength between refractory and valve steel body. When the stiffness is insufficient, especially the valve body, it is impacted and deformed by high-pressure hot air, which causes cracks in the refractory and affects the overall life of the valve.
Extended data:
The hot air valve can only be installed and used when the valve stem is vertical to the ground, and the debugging should also be carried out when the valve stem is vertical to the ground.
The ventilation direction of hot air valve and the inlet and outlet direction of cooling water must conform to the installation diagram. When installing the hot air valve, the wind direction arrow should point to the hot air main pipe; When the hot air valve is used as combustion valve and flue valve, the wind direction arrow should point to the hot air stove; When the hot air valve is used as the return air door, the wind direction arrow should point to the hot air main pipe; ?
When the hot air valve is used as a cut-off valve for mixed air, the wind direction arrow should be turned away from the hot air main pipe (the installation method of the hot air valve used as other valves mentioned above only means that when the nameplate name is still "hot air valve", when the nameplate name is clearly the valve name, the wind direction arrow is the medium direction).
Baidu encyclopedia-hot air valve