Spheroid of nickel alloy ball valve

The utility model discloses a spheroid of nickel alloy ball valve, including the spheroid body that has the medium circulation passageway, its characterized in that: spheroid body up end processing have the bellied excircle bulge loop of radial orientation, the facing (operation) of going to the bottom of spheroid body has the inner groovy that forms hole support bearings structure, the square hole that processing has the downwards concave is served to the table of going up of foretell excircle bulge loop. Have following characteristics: the spheroid of upper assembling type ball valve, upper portion are the excircle bulge loop of excircle support bearings design, inner groovy that the lower part was designed for hole support bearings, and the bearing specific pressure of bearing furthest under medium high pressure operation situation has increased the square hole design space of carry -over moment simultaneously. Open on upper portion has the pressure balance hole that flow channel hole is the same with the lumen, prevents that the valve body lumen from rising because of liquid medium vaporization build -up of pressure unusually, opens and close easily. Radius arc angle form bottom face is down set to the bottom face under the spheroid body, and the bottom face digs the limit design under the spheroid body promptly, reduces abrasive machining's work load.