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You are here: Home1 / Blog2 / LPG Leisure Time3 / Caravanning & Camping4 / How does an excess flow device work?

How does an excess flow device work?

12. June 2017/in Caravanning & Camping, Gas Regulator, Gas Cylinder & more, Gas Regulator, Gas Cylinder & more, Grill & BBQ, LPG Everyday, LPG in Commerce, LPG in Private Housholds, LPG Leisure Time, Marine

Inhaltsverzeichnis

  • Similar function
  • When does the safety device respond?
  • Threshold 10 percent
Approximate reading time: 2 minutes

The excess flow device is a safety device in LPG systems which protects against uncontrolled gas escape should there be a massive leak in a hose assembly. So far, so good. But how exactly does the safety device actually work and how does it detect when it needs to block the gas supply?

An excess flow device, for short: SBS, is basically comparable to a so-called aquastop for a washing machine. If a leak occurs there, the aquastop valve immediately interrupts the water supply.

Automatische Schlauchbruchsicherung SBS von GOK

Automatic excess flow device SBS from GOK

Similar function

The SBS works in a similar way. As soon as a massive leak occurs on the downstream hose assembly, it activates a closing taper in the fitting. This shuts off the gas supply so that no LPG can escape uncontrolledly.

  From what length of hose assembly do I need an excess flow device?

Die Schlauchbruchsicherung - hier die manuelle Version - schließt der Betreiber direkt am Ausgang des Druckminderers an.

The operator connects the excess flow device – here: the manual version – directly to the outlet of the pressure reducer.

When does the safety device respond?

Every SBS, regardless of whether it is an individual component in the LPG system or already integrated into the pressure regulator, is designed for a specific switching point. For example, the standard excess flow device for small cylinder systems (including to operate a gas barbecue, radiant heater or outdoor heater) for 1.5 kilograms of LPG per hour at an outlet pressure of 50 millibar.

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Threshold 10 percent

If there is a leak in the hose assembly and the actual flow rate is around 10 percent higher than the nominal flow rate of 1.5 kilograms per hour, the SBS shuts off the gas supply.

  Which GOK components do I need as a private individual for my gas barbecue?

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Approximate reading time: 8 minutes

Information regarding technical systems

This blog will never ask members of the public or unqualified persons to make changes to or fiddle around with technical systems themselves.

In accordance with the Industrial Safety Regulation (BetrSichV), a qualified person must take care of a system which requires monitoring.

A qualified person is someone who has the specific specialist knowledge required. This knowledge is gained by way of a professional apprenticeship, corresponding professional experience or current occupational activity.

Please note that the texts are based on information, regulations and standards for Germany. Please always check the rules and regulations in the relevant country of destination and consult specialists if necessary.

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