Hi. This is just a quick post re third txv and dryer port.

This is the first time that I have received a refrigerated van with the expansion valve and dryer having an extra port. The closest that I have seen is the "oil return" system in bus airconditioners where oil gets sucked back to the compressor before it gets pushed to the condenser.

Have browsed our forum, and the closest topic that I found is the accumulator thread.

A picture of the parts that I need to replace can be found here - zaccs.motive-ad.com/refoct08.jpg

Have two questions.

1. What is this port for?

2. I found it very hard to look for a similar dryer, and am contemplating on buying a regular Sporlan dryer and regular dual capillary expansion valve. Will there be an effect in cooling performance?

Thank you for reading the post. I would appreciate any inputs from our experts here.

Have a great week ahead.