Dungs FRSBV 20010 Series Kullanım Kılavuzu - Sayfa 18
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10.2 Tools required
• The threshold level is adjusted and the spring replaced for all five pressure relief valve types in the same way.
They differ only in the spanner used for the adjusting nuts' thread.
• A pipe socket spanner is needed for every FRSBV type:
FRSBV type
FRSBV 5010 ND
FRSBV 20010 HD
11. Flow tables
° V
=
gas used
Air density
spec. weight of the gas used
f =
Width across the pipe
socket spanner flats
SW 14
SW 30
°
V
x f
air
Type of gas
Natural gas
City gas
LPG
Air
Spec.
weight
dv
f
[kg/m
]
3
0.81
0.65
1.24
0,58
0,47
1,46
2.08
1.67
0.77
1.24
1.00
1.00
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