Connecting a gas barbecue: These components are required between the gas cylinder and the barbecue

You’ve purchased a new gas barbecue or want to upgrade your current setup – but which components are actually needed to operate it safely with an LPG cylinder? And what do you need to consider?

The path from the gas cylinder to the cooking grill involves several technical components – and for many private users, this is unfamiliar territory. Pressure regulators, gas hoses, and excess flow devices – these components are in some cases legally required and ensure that the gas appliance is not only supplied correctly, but also operated safely. But where does each part go? What types are available? And what differentiates a simple regulator from a safety device?

This guide explains how to connect your gas barbecue in compliance with applicable standards, which components you need, and what to know about replacement intervals and certification markings. The examples reference tried-and-tested GOK solutions – but they can generally be applied to all gas barbecue setups.

What do I need to safely connect my gas barbecue?

Several components must be correctly and securely connected between the gas cylinder and the barbecue. Only then can you ensure that the gas barbecue operates reliably, legally and safely. The following components are essential:

• Pressure regulator (also: pressure reducer): Reduces the cylinder pressure to the operating pressure suitable for the barbecue – usually 50 mbar in Germany.
• Gas hose: Connects the pressure regulator to the barbecue. Ensure it is of suitable length, material quality and properly approved.
• Connection fittings: Adapters or transition pieces if the barbecue and gas hose have different thread types.

Optional:

• Excess flow device (SBS): Automatically interrupts the gas flow if the hose is damaged or torn off. For private individuals, the excess flow device becomes mandatory only from a hose length of 150 cm – but it is advisable even for shorter hoses!
• Pressure regulator with EFV (integrated SBS): These regulators have an integrated excess flow device, eliminating the need for an additional component.
• Alternative technology, same safety: GOK also offers regulators with integrated excess flow protection (HPU = Hose Protection Unit), which likewise shut off the gas in the event of hose rupture.

It is essential that all components are compatible with each other and bear valid certification marks (e.g. CE, DVGW). Manufacturers typically supply gas barbecues with a basic setup: a standard pressure regulator and a plastic gas hose.

Many experienced users upgrade to higher-quality components with safety features shortly after purchase or during regular operation.

Pressure regulators for gas barbecues: Which type is right?

The pressure regulator – also called a pressure reducer – is the central component between the gas cylinder and the barbecue. It reduces the high cylinder pressure (usually around 7 bar) to the standard operating pressure of 50 mbar, commonly used for domestic gas barbecues in Germany.

Exception: If the barbecue is connected to an LPG system in a leisure vehicle, the user can choose between 30 or 50 mbar – depending on the system’s design.

Other countries may use different gas pressures, typically between 29 and 37 mbar.

Simple vs. Safety Pressure Regulators

There are two main types available:

• Single-stage pressure regulators: Basic models without additional safety features. Cost-effective and often pre-installed by manufacturers.
• Two-stage pressure regulators: Include safety devices such as S2SR – an overpressure shut-off safety valve. GOK also offers regulators combining S2SR and an excess flow device.

Single-stage or two-stage version?

Legally, a single-stage regulator is sufficient for gas barbecues. Nevertheless, upgrading to higher-quality components can make sense – especially based on personal safety preferences.

Important: The regulator must match the cylinder type, connection thread and form (e.g. 5 or 11 kg cylinder with W21.8×1/14 LH thread, often abbreviated as KLF or G.12 connection).

Gas hose and excess flow device: What should you consider?

The gas hose connects the regulator to the barbecue and plays a key role in safety – yet it’s often overlooked. Weather exposure, UV radiation and mechanical stress make it particularly prone to wear.

Choosing the right hose

When purchasing, consider the following:

• Approvals and standards: The hose must be suitable for LPG and comply with DIN EN 16436-2. The hose material should be marked with DIN EN 16436-1.
• Length: As short as possible, as long as necessary. From 150 cm, an excess flow device is mandatory.
• Material: Plastic hoses are cheaper and functional. Rubber hoses remain flexible even at low temperatures and offer more comfort.

Excess flow device (SBS) – optional, but recommended

As stated, it is legally required for hoses of 150 cm or longer. It prevents uncontrolled gas leaks in case of major hose damage or disconnection. Even for shorter hoses, it is highly recommended – especially with frequent use or exposed, hard-to-reach installations.

Replacement and inspection

Gas hoses are wear parts and must be:

• Replaced after 10 years from manufacturing date, or sooner if damaged
• Regularly checked for cracks, porosity, or hardening
• Marked with the manufacturing date (printed on the hose)

GOK offers an additional service: a yellow tag that clearly states the latest replacement date, depending on usage conditions.

Special case: Operating multiple appliances

Sometimes, barbecues share the gas supply with other appliances such as pizza ovens, patio heaters or a second barbecue. These setups require special safety measures.

To operate multiple appliances, a distribution system is required – usually a branch stop valve mounted downstream of the pressure regulator.

Safety requirements

When using multiple appliances:

• The pressure regulator must be suitable for simultaneous operation, and the gas cylinder’s withdrawal capacity must be considered.
• Each outlet must have its own shut-off device.
• For longer hoses, additional excess flow devices are mandatory. They are generally recommended even for shorter lengths.

Recognising wear and replacing components in time

LPG systems in leisure use experience natural wear – especially when used outdoors. Weather, UV light, mechanical stress and even animal bites can damage hoses, regulators and fittings.

Visual inspection – simple but effective

Check components regularly:

• Any cracks, discolouration, or hardening in the hose?
• Is the manufacturing or expiry date still valid?
• Are all markings (e.g. production date) legible?
• Are all connections tight and secure?
• Any visible deposits, corrosion or leaks at the regulator?

Replacement intervals

According to DVGW worksheet G 612:

• Gas hoses: Replace every 10 years, sooner if heavily used or damaged
• Pressure regulators: Also replace every 10 years, unless otherwise specified by the manufacturer

When to consult a professional?

Although private individuals may perform basic installations themselves, a specialist should be consulted in case of uncertainty or visible damage. A simplified leak test with leak detection spray or soapy water can help identify leaks.

Important for all gas barbecue users: As per DVGW worksheet G 612, all LPG leisure systems must be tested and maintained according to the appliance operating instructions. The user is responsible for this!

Conclusion: Safety starts with the connection – choose certified components

Connecting a gas barbecue to an LPG cylinder is not rocket science – but proper execution is key for safe and legal use. Those who rely on approved, tested components, inspect them regularly and replace them when necessary, lay the foundation for safe operation.

Pressure regulators, gas hoses, connectors, valves and excess flow devices form an integrated safety system, where each part plays a vital role. While basic setups are often supplied as standard, upgrading to higher-quality components is usually worthwhile – for both safety and durability.