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Selection principles of Ball Valve

November 01, 2024
1. For steam boiler Ball Valve, open full-lift spring Ball Valve 0490 series are generally used;
Remote controlled float valve
2. For Ball Valve for liquid media, micro-lift spring Ball Valve 0485 series are generally used;
3. For Ball Valve for air or other gaseous media, closed full-lift spring Ball Valve are generally used;
4. For Ball Valve for liquefied petroleum gas tank cars or liquefied petroleum gas railway tank cars, full-lift built-in Ball Valve are generally used;
5. For Ball Valve for oil well outlets, pilot Ball Valve are generally used;
6. For high-pressure bypass Ball Valve for steam power generation equipment, pilot Ball Valve with dual functions of safety and control are generally used
7. If the Universal Valve is required to be opened regularly, a Universal Valve with a lifting wrench should be used. When the medium pressure reaches more than 75% of the opening pressure, the valve disc can be slightly lifted from the valve seat with a lifting wrench to check the flexibility of the Universal Valve opening;
8. If the medium temperature is high, in order to reduce the temperature of the spring chamber, generally when the closed Universal Valve temperature exceeds 300℃ and the open Universal Valve temperature exceeds 350℃, a Universal Valve with a radiator should be selected;
9. If the back pressure at the Universal Valve outlet is variable and the change exceeds 10% of the opening pressure, a bellows Universal Valve should be selected;
10. If the medium is corrosive, a bellows Universal Valve should be selected to prevent important parts from failing due to corrosion by the medium.
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