EXPANSION VALVE

摘要

PROBLEM TO BE SOLVED: To ensure stabilized dynamic characteristics of an expansion valve where a reaction pushing a diaphragm receiving board sideways acts on the diaphragm receiving board from a rod by preventing a sliding resistance from being generated irregularly in the diaphragm receiving board. SOLUTION: A foot piece 33a sliding on a fixed wall 31a on the periphery is projected from a diaphragm receiving board 33 so that sideward movement of the diaphragm receiving board 33 due to reaction from a rod 20 is regulated thus forming the sliding surface of the foot piece 33a into a smooth convex surface with respect to the fixed wall 31a.