Systems with an orifice tube automatically turn the AC system on and off to regulate the flow of refrigerant to the evaporator. Evaporator: This is where the magic happens. While all the other parts of the system are located in the engine compartment, this one is. Santech Santech A/C Orifice Tube MT0092-1. You have 0 Items In Your Cart. CART TOTAL: $ 0 00. VIEW CART AND CHECKOUT. Home ∕ Auto Parts ∕ Cooling, Heating And Climate Control ∕ Air Conditioning.
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The spare parts industry pundits of one of the leading suppliers of Spare Parts for Ashok Leyland in this blog would like to discuss in detail the symptoms and accordingly the replacement procedure of car air conditioning orifice tube, or most commonly known as the expansion valve. Orifice Tube is a device that plays a quintessential role in. The difference in this system is the Orifice Tube usually located in the entrance to the evaporator, in about the same location as the TXV, this is a fixed orifice and not variable. Refrigerant flow control is accomplished by cycling the compressor on and off or with a variable output compressor. An orifice tube is directional. There will be an arrow located on it and that is the flow of the refrigerant, in this case going down. Buy Auto Parts Stocks a Line of AC System Parts! Buy Auto Parts will get you the right fit for your vehicle if you select your automobile's right year, make and model.
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location of orifice tube on 99 chevy suburban
GEB on Mon April 24, 2006 3:34 PM
Year: 1999
Make: chevy
Model: suburban
Engine Size: 5.7l
Refrigerant Type: 134
Make: chevy
Model: suburban
Engine Size: 5.7l
Refrigerant Type: 134
I'm having trouble locating the orifice tube on this system/ dual air thanks
Chick on Mon April 24, 2006 3:47 PM
Dual air it should be right before the split to the rear line, or just after it towards the evaporator (High side) hope this helps.
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Chick
Email: Chick
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Freedoms just another word for nothing left to lose
Edited: Mon April 24, 2006 at 3:48 PM by Chick
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Chick
Email: Chick
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Freedoms just another word for nothing left to lose
Edited: Mon April 24, 2006 at 3:48 PM by Chick
chris142 on Wed May 17, 2006 9:33 PM
If I remember correctly it's in the connection under the air filter. Easiest to get to after removing the air filter assembly.
mickeycool17 on Sun July 16, 2006 9:30 PM
just got done working on a 99 chevy suburban. the orifice tube is in thr high side line of the front evaperator,it the lower line as you face the firewall. take off the window washer jug. the small line. but be very careful trying to undo thr fitting its tight.use 2 wrenches. dont slip cause if you do you coukd wipe out the evaporator lines and the heater core lines right below! that would be a pisser we gave up cause once we broke the connection loose it became very hard to turn the fitting. any suggestions?
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geturdone
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geturdone
Chick on Sun July 16, 2006 9:53 PM
When you reassemble it, a 'drop' of nylog on the threads will help it go back on easy...Not just for O rings...
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Chick
Email: Chick
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Freedoms just another word for nothing left to lose
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Chick
Email: Chick
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Freedoms just another word for nothing left to lose
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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.
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.
LMK 2019
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