Adjustable flanged ball valve

The utility model discloses an adjustable flanged ball valve belongs to fluid machinery. This adjustable flanged ball valve includes valve body, valve gap, the setting spheroid in the valve body, the valve gap is connected to the valve body through the screw rod, and there is the ring flange in valve gap port department through threaded connection, it has a plurality of butt joint holes to open on the ring flange terminal surface. Through movable flange butt joint pipeline, make the pipeline when expend with heat and contract with cold, can automatic compensation to solve above -mentioned problem.