The utility model discloses a novel throttle valve, including valve body, valve gap, valve rod, valve rod lifting drive mechanism and case, characterized by: still include connecting seat, go -between and bonnet nut, lateral surface outer convex around the valve gap mounting hole on the valve body becomes to have a cylindric connecting seat, and the lateral surface of connecting seat has the external screw thread, the lateral surface outer convex of valve gap becomes to have the annular go -between of round circle, and the external conjugate diameter of go -between is lighter than the external conjugate diameter of connecting seat, the go -between supporting is connected on the connecting seat, bonnet nut is for having internal screw thread socket type structure, and the whole cover of valve gap is in the outside of go -between with the connecting seat, and bonnet nut is connected through the external screw thread of internal thread with the connecting seat, bonnet nut still has a location bulge loop, and bonnet nut is last to keep away from in the one end of connecting seat the convex and become round location bulge loop, keeps away from spacing the linking to each other of terminal surface of connecting seat on location bulge loop and the go -between. The utility model discloses an it is reasonable that novel throttle valve has simple structure, advantage that joint strength is higher.