Recommended refrigerant copper tubes size are:
REFRIGERANT SYSTEM SCHEME
LIQUID LINE
MF 58
10 mm-3/8"
MF 68
10 mm-3/8"
LIQUID
THERMOSTATIC
SOLENOID
EXPANSION
VALVE
VALVE
KVP
MF 58
THERMOSTATIC
EXPANSION
VALVE
THERMOSTATIC
EXPANSION
VALVE
MF 68
GAS LINE
12 mm-1/2"
16 mm-5/8"
6
REFRIGERANT
INLET - LIQUID
REFRIGERANT
OUTLET - GAS
LIQUID
SOLENOID
VALVE
REFRIGERANT
INLET - LIQUID
KVP
REFRIGERANT
OUTLET - GAS