ADAST V-line 899 LPG HYBRID Series, Руководство пользователя

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USER’S MANUAL V-line 899x.xxx/LPG HYBRID
49
40
25
18
35
45
20
19
30
– 50
Greater
than 35 Pressure system – submersible pump in the tank
Table 2 – Operating flow rate of the fuel dispenser in relation on the fuel storage tanks parameters
for hydraulic unit with Q
max
= 80 dm
3
.min
-1
, Q
max
= 130 dm
3
.min
-1
, Q
max
= 150 dm
3
.min
-1
and
Q
max
= 150 dm
3
.min
-1
Geodetic suction
head
Hsg
max
[ m ]
Inner
diameter of
suction piping
DN
min
[ mm ]
Length
of suction
piping
L [ m ]
Operating flow rate of the
fuel disppenser without
vapour recovery
Q [ dm
3
. min
-1
]
±10 %
Supposed loss in
pressure
in
suction piping
[ kPa ]
Petrol
Diesel oil
3 50
10 80 14
20 80 15
25 80 16
30 75 17
35 75 18
40 70 19
45 65 20
– 50
Greater
than 45 Pressure system – submersible pump in the tank
Fig. 1 - Fuel dispenser connection to the underground tanks
PT – fuel suction piping
VR – return piping for vapour recovery
DN min. 20)
SK – strainer
ZV – return valve (alternatively)
Hsg – geodetic suction head (m)
DN – inner diameter of suction piping (mm)
L – lehgth of suction piping (m)
17.1.2. Installation at the filling station with overground (aboveground) tanks
A safety relief check valve (PZV), opening at vacuum pressure Hs = – 0,03 MPa max. induced by
dispenser pump, shall be installed in the suction piping (PT) connecting the dispenser and the storage
tank. The check valve (PZV) is usually connected to the suction fitting located on the tank cover. The