Expansion valve

The utility model provides an expansion valve. An expansion valve includes: a valve body; the box is fixed to one end of the valve body, and a diaphragm is arranged in an inner cavity of the box; the operating member is provided with a first end abutting against the diaphragm through a thrust gasket and a second end abutting against the valve element component, so that the operating member can respond to the movement degree of the diaphragm to move from a first limit position to a second limit position. The opening of the valve seat enters different degrees of opening states from a closed state. The expansion valve further comprises a first supporting portion, and when the operating member is located at the second limit position, the thrust pad directly or indirectly abuts against the end surface of the end of the valve body and is supported by the first supporting portion. 本公开提供了一种膨胀阀。一种膨胀阀，包括：阀体；盒，所述盒固定至所述阀体的一个端部，膜片置于所述盒的内腔中；和操作构件，所述操作构件具有经由推力衬垫抵接所述膜片的第一端和抵接所述阀芯部件的第二端，使得所述操作构件能够响应于所述膜片的移动程度从第一极限位置朝向第二极限位置移动