Expansion Valves: The expansion valve is a complex valve which regulates refrigerant flow at the evaporator inlet with an internal moving rod mechanism. This rod opens and closes to differing heights based upon the cooling burden put upon the system. This process of metering modulates the flow according to the temperature of the refrigerant in the evaporator coil. Too much refrigerant could cause the evaporator to get too cold and even freeze up the coils. Too little refrigerant would result in inadequate cooling.
I put a new ac compressor on the Explorer but I need to find the Orifice tube and clean it out. Can anyone tell me if a Ford has an orifice tube like a GM and where it is located? This is because the orifice tube acts as a restriction in the system, and anytime there is a restriction in an air conditioning system, the temperature will drop. For instance, if there is a crease in a condenser, ice or frost will form at that location.
One of the many parts that can fail within your vehicle's air conditioning, is the orifice tube. This tube is also known as the expansion tube, and is located within the tube between the condenser and the evaporator. It has 1 side that is a little smaller than the other, to supply more pressure. Lincoln Town Car 2007, A/C Orifice Tube by Four Seasons®. Quantity: 1 Piece. Products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right. The A/C evaporator core orifice, located in the condenser to evaporator tube (19835), cannot be serviced in detail as a component of the line. If replacement is necessary, follow the procedure outlined for Liquid Line Removal and Installation. An orifice tube replacement service kit may be used as an optional service procedure.
The refrigerant which enters the expansion valve is high-pressure liquid, and is warm. The liquid which flows through the valve and enters the evaporator is low-pressure and cold. This is the exact point where the refrigerant has passed from what is known as the “high side” to the “low side” of the system.
Orifice Tubes:
Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen.
It becomes necessary to replace the orifice tube if the fine mesh screen or the internal components of the orifice tube become plugged, restricting refrigerant and lubricant flow. Orifice tubes also designate the dividing point between the “high” and “low” sides of the system.
An Orifice Tube Is Located
LMK 2019