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Gas Grill Valves - China Manufacturer
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Fluid through the orifice flow constant cross section is smaller, resulting in a flow rate of sudden increase. Fluid energy conservation law, the flow rate is increased, the static pressure suddenly dropped, the orifice at the pressure drops below the saturation vapor pressure of the fluid, the partial vaporization of the liquid as a gas, hydraulic cutting machinebubbles formed in the stream. When the outlet pressure is still lower than the saturated vapor pressure, the air bubbles will remain in the valve after the formation of the phenomenon of gas-liquid two-phase coexistence, ie "flash". Generate flashed fluid orifice With over water cross section increases, the flow rate is reduced accordingly, pressure valve after the abrupt rise. When the valve after the pressure was returned to the saturated vapor pressure higher than the liquid, the pressure compressing the flash of bubbles generated from circular to elliptical, and then reaches the surface of the upstream of the critical dimension of bubbles began to flatten, and then burst, this process is called " cavitation. " All the energy is conce ntrated in the rupture point, and have a huge impact collision valve, valve seat and valve body, to its surface plastic deformation, the formation of a rough cellular slag hole, this is the cavitation formation process. Oven Safety Gas Valves
