Maximum pressure parameters of different materials of valve
The relationship between valve temperature and pressure Valve use temperature and pressure have a certain internal relationship, but also affect each other. Among them, temperature is the dominant factor, a certain pressure of the valve is only suitable for a fixed temperature range, the change of valve temperature can be seen in the use of valve pressure, for example, a carbon steel valve nominal pressure is PN100 when the medium working temperature is 200℃, its maximum working pressure is 10MPa; When the medium operating temperature is 400°C, the maximum working pressure is 5MPa; When the working humidity of the medium is 450°C, the maximum working pressure is 45MPa.
Enamel valve, temperature resistance is limited by the sealing ring material, the maximum humidity does not exceed 150℃C
The operating pressure of the valve is determined by the material from which the valve is manufactured
The maximum allowable nominal pressure of gray cast iron valve is PN16;
The maximum allowable nominal force of malleable cast iron valve is PN25;
The maximum allowable nominal pressure for ductile iron valves is PN40
The maximum allowable nominal pressure for copper alloy valves is PN25
The maximum nominal pressure allowed for titanium alloy valves is PN25
The maximum allowable nominal pressure of carbon steel valve is PN320; The maximum allowable nominal pressure of alloy steel valve is PN300;
The maximum nominal pressure allowed for stainless steel valves is PN320;
The maximum nominal pressure allowed for plastic valves is PN6;
The maximum nominal pressure allowed for ceramic, glass and enamel valves is PN6
The maximum allowable nominal pressure for FRP valves is PN16.
