To protect hose lines in camping applications, excess flow devices SBS with hoses
longer than 1500 mm must be used.
To protect hose lines in commercial LPG systems, excess flow devices SBS with
hoses longer than 400 mm must be used.
INAPPROPRIATE USE
All uses exceeding the concept of intended use:
• e.g. operation using different media, pressures
• use of gases in the liquid phase
• installation against the flow direction
• operation with inappropriate hoses
• changes to the product or parts of the product
• underground work
• in continuous and/or non-supervised mode
For underground work and in continuous and/or non-supervised mode, medium
pressure regulators with leak gas protection, e.g. type MD-LGS
part no. 02 880 01, must be used.
Excess flow devices are no pressure regulators.
Pursuant to DGUV Directive 79 § 11 section 3, consumer units may only be operated
at a uniform operating pressure adjusted to the consumer line!
FUNCTION DESCRIPTION
The excess flow device SBS is a safety equipment preventing gas from escaping when the
hose line is damaged or has come loose.
If the hose line is damaged and/or if the nominal flow rate is exceeded by 10 %, a sudden
pressure loss occurs and the excess flow device SBS closes. The gas supply to the
connected consumer is interrupted. This way, gas is prevented from escaping in an
uncontrolled manner.
Once the reason causing the excess flow device SBS to be closed has been remedied, the
excess flow device SBS can be re-opened manually.
Regarding the automatic version, the excess flow device is started up via a pulse bore. The
closing taper opens automatically when the pressure has equalised. Due to a longer hose line
the opening process may be delayed.
DESIGN
SBS manual
Inlet connection
Outlet connection
4 / 10
Excess flow device SBS
SBS automatic
Control knob
Arrow for flow direction