Thermostatic refrigerant expansion valve

Claim 1

IN COMBINATION: A REFRIGERANT EXPANSION VALVE HAVING A VALVE BODY WHICH IS PROVIDED WITH A PARTITION FOR DEFINING A REFRIGERANT INLET CHAMBER, A REFRIGERANT OUTLET CHAMBER, AND A VALVE SEAT THEREBETWEEN; A VALVE ELEMENT DISPOSED WITHIN ONE OF THE CHAMBERS FOR CLOSING AGAINST THE SEAT TO THROTTLE REFRIGERANT FLOW THERETHROUGH; A THERMOSTATIC POWER ELEMENT DISPOSED ADJACENT ONE END OF THE VALVE BODY AND ADAPTED TO BE RESPONSIVE TO EVAPORATOR OUTLET TEMPERATURE FOR OPENING THE VALVE ELEMENT; SAID POWER ELEMENT COMPRISING A STEM EXTENDING THROUGH THE VALVE BODY INTO UNATTACHE ABUTTING ENGAGEMENT WITH THE VALVE ELEMENT; AN ADJUSTABLE SUPERHEAT SPRING DISPOSED WITHIN SAID ONE CHAMBER ADJACENT THE OTHER EHD OF THE VALVE BODY FOR OPPOSING THE ACTION OF THE POWER ELEMENT ON THE VALVE ELEMENT; SAID VALVE BODY HAVING AN OPENING REGISTERING WITH THE VALVE SEAT; A REMOVABLE CAP STRUCTURE SEALING SAID OPENING; A PRESSURE-BALANCING BELLOWS LOCATED WITHIN SAID ONE CHAMBER IN SURROUNDING RELATION TO THE SUPERHEAT SPRING;