GEA Bock HG4 CO2 - Manual (Page 27)

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9| Dimensions and connections
SV
DV Suction line
Discharge line see technical data, Chapter 8
A* Connection suction side, not lockable
1/8“ NPTF
A1 Connection suction side, lockable
7/16“ UNF
B Connection discharge side, not lockable
1/8“ NPTF
B1 Connection discharge side, lockable
7/16“ UNF
C Connectoin oil pressure switch OIL
7/16“ UNF
D Connection oil pressure switch LP
7/16“ UNF
D1 Connection oil return from oil separator
1/4“ NPTF
E Connection oil pressure gauge
1/8“ NPTF
F Oil drain M22 x 1,5
H Oil charge plug M22 x 1,5
J1 Oil sump heater (accessories) M22 x 1,5
K Sight glass -
L1 Thermal protection thermostat
1/8“ NPTF
O Connection oil level regulator 3 x M6
P Connection oil differential pressure sensor M20 x 1,5
ÖV Connection oil service valve
1/4“ NPTF
Q Connection oil temperature sensor
1/8“ NPTF
SI1 Decompression valve HP
1/8“ NPTF
SI2 Decompression valve LP
1/8“ NPTF
* = only with additional adapter possible