The Type B NG is a two-stage pressure reducing
regulator with an automatic safety device to
avoid outlet over-pressure (relief valve venting to
atmosphere) or stopping the gas ow in the event
of an abnormal drop in inlet or outlet pressure or
an excess ow condition.
Rearming is manual by using the push-button and
depending on models (B6 version only) a valve may
be associated. A removable vent lter is situated
in the inlet connection, and a vent screen (see
schematic, item V).
The underground model is treated for anti-corrosion
and is painted.
Maximum allowable pressure: 5 bar
Operating temperature: -20 / 60°C
INSTALLATION
CAUTION
• To be used with clean, dry and non-corrosive gas.
• All regulators, except for underground version,
must be protected from direct contact of water
and corrosive atmosphere due to construction
materials base with zinc, copper and aluminium
(cabinet installation recommended).
• Recommended installation positions : inlet and/
or outlet in vertical position.
• To avoid: vent facing upwards, without protector
or connector, in humid conditions (risk of water
penetration due to rain or condensation).
TYPE B NG REGULATOR
DESCRIPTION
Before connecting :
• Do not weld the inlet and outlet connections with
the regulator in place.
• Remove the protective capsules from the inlet
and outlet connections.
• Ensure that the pipeline is perfectly clean.
• Place the O-ring(s), (according to model)
greasing is recommended.
Connection
• Respect the gas ow direction indicated on the
regulator body.
• Respect the tightening torques by using a
dynamometric wrench (inlet with tight shuto
metal = 40 N•m, others according to O-ring used).
!
WARNING
Do not re-orientate the regulator after tightening
connections, under no circumstances should
the regulator be put under any geometrical or
dimensional consecutive force between inlet
and outlet sides.
When connecting the vent (residential areas,
underground) the diameter used should not be
inferior to 10 mm and should not be obstructed.
COMMISSIONING OR REARMING 1
Close the downstream valve (if existent). Open the
upstream valve. Press on the green button for a
few seconds, then release. Open the downstream
valve (if existent).
Gas Type Density
Volume
Weight
kg/m3
Pressure
Setpoint
Nominal Flow
B6 B10
Manufactured gas (n)m3/h
• Butane air
• Propane air
1.20
1.15
1.552
1.487
11
11
4
4
7
7
Natural gas (n)m3/h
• Group L
• Group H
0.64
0.61
0.827
0.789
27
21
6
6
10
10
LP-gas kg/h
• Propane 1.56 2.017 37 7.2 12
