Expansion Valve Adjustment

expansion valve
A refrigerant-metering valve with a pressure or temperature controlled orifice.
An expansion valve is a slide valve used in a steam engine to control the cut-off. It rides on the back of an adapted main slide valve and is driven by an additional eccentric that has more advance than the main eccentric. The cut-off is adjusted in one of two ways.
A part of an air-conditioning system, located between the Condenser and the Evaporator that regulates the flow of liquid Refrigerant to the vaporator.

adjustment
The process of adapting or becoming used to a new situation
alteration: the act of making something different (as e.g. the size of a garment)
making or becoming suitable; adjusting to circumstances
the act of adjusting something to match a standard
A small alteration or movement made to achieve a desired fit, appearance, or result