LPG
Technical Details
5.201
FLEXWELL®-LPG Pipe Systems for Petrol Station
s
End coupling
screwed with graphite sealing, connection with welding end
Heat resistant up to –50 °C, nominal pressure 25 ba
r
Heat shrink tube o
r
corrosion protection tape
s
D
2
D
3
D
1
entirely pressed
l
min. standard gauge = L min
.
Material composition:
Connecting piece with welding end Material No. 1.0570 (St 52-3) –20 °C
Material No. 1.4404 –50 °
C
Pressure ring
cryogenic steel 25CrMo4 (No. 1.7218
)
Sealing ring
graphite (SIGRAFLEX F...Z
)
Core piece
stainless steel (No. 1.4571)
Clamping ring
cryogenic steel 25CrMo4 (No. 1.7218
)
End coupling GRAPA with welding en
d
Type
DN
l
L min. s
D1
D2
D3
Article No.
Article No
.
Connection –20 °C
Connection –50 °C
mm
mm
mm
mm
mm
mm
Material 1.0570
Material 1.440
4
LPG 22/33
20
125
210
2.95
55
61
26.7
1014392
101439
3
LPG 30/40
25
129
210
3.40
65
71
33.4
1014399
101440
0
LPG 39/50
32
140
220
3.55
81
87
42.2
1014407
101440
8
LPG 48/61
40
154
230
3.70
93
99
48.3
1014415
101441
6
LPG 60/74
50
158
240
3.90
109
115
60.3
1014421
101442
2
Testing of quality, treatment, pressure and material in line with the system approval b
y
external inspection authorities and the internal quality management.
19.03.2026 Subject to technical changes. Page 6
