Last week I started to build a three stager. I had most of the parts laying arround, some are from my first cascade

The parts
First Stage:
Elextrolux MS26TB compressor 1 3/8HP
1,1kw condenser
Castel 4308/2 filter
3,6m TC-36 captube
5m HX 6mm in 15mm tubing
Carrier suction accumulator
R507a
Dixell XR10C Thermostat (PTC probe)

Second stage
L'unite CAJ4476Y 1 1/6HP
Desuperheater
ESK oilseparator
Castel 4308/2 filter
CPEV or TC-36 cap tube
5m HX 6mm in 12mm tubing
manometers high and low side
R1150

Third stage
L'unite CAJ2432Z 4/5HP
Desuperheater
Henry S5180 Oilseparator
Danfoss DLX052 filter
CPEV or TC-36 cap tube
chilly1 evap Rev.3
manometers high and low side
R14 or maybe Krypton

This is how I placed all the parts last week.



Then I made the heatexchangers, after that I mounted the first parts on my plate.











Next step was insulating the heat exchangers. They got really big...







Working on the first stage









Today I finsihed the first stage
















I'm not sure whether I should use R14 or I should try Krypton in the third stage. Anybody tested Krypton? I heard that it should be expensive, but I dind't find much information about it.
Here is the pressure chart, maybe a three stager is not enough to condense it at reasonable pressures...



Furthermore I'm not sure if I should use captube or a CPEV in the second and third stage. In my last two cascades I used captube and I had very good results. I never had any luck with any kind of valves