Are AC lines under pressure?

The low pressure side of the air conditioning system in most vehicles is attached from the AC evaporator to the AC compressor. It’s referred to as the low pressure side because during this phase of the cooling process, the refrigerant flowing through the system is a gaseous state.

Where to find low side A / C service port?

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Where is the low pressure side of an AC unit?

Find the low-pressure side of the AC unit using a process of elimination. The side of the AC that leads from the compressor to the receiver dryer is the high-pressure side, so the piping leading from the compressor to the opposite side will be on the low-pressure side. You Fix Cars: Automobile Air Conditioning.

How are CPI / a Lok tube fittings maintained?

CPI™ / A-LOK®ferrule designs assure that all make and remake motion is transmitted axially to the tubing. Since no radial movement of the tubing occurs, the tubing is not stressed. The mechanical integrity of the tubing is maintained. No Distortion

What kind of steel are CPI tube fittings made of?

Other materials include steel, brass, aluminum, nickel-copper, Hastelloy C®, Alloy 600, Titanium, 6Mo, Incoloy 625 and 825. Straight fittings are machined from cold finished bar stock and shaped bodies are machined from close grain forgings.

How do I locate my low pressure port?

How do I locate my low pressure port? The low side service valve is located in the line that runs from the compressor through the evaporator (firewall) and up to the condensor on the low pressure (suction) side of the system.

Where is the low side service port on a R-134a?

R-134a Recharge hoses will only fit on the low side service port on all R1-34a vehicles and R-12 vehicles that have been converted to R-134a. If you don’t know where your low side port is you can try using our low side port finder.

Where does the low pressure hose come from in an AC unit?

As indicated above, most leaks come from seals on the AC compressor, the evaporator, the drier or the condenser. In fact, when you look at the diagram above, you’ll see that on many AC systems, there are multiple low pressure hoses; connected from the compressor to the expansion valve and the expansion valve to the evaporator.