How to Choose the Correct Gas Regulator for Your Appliance (UK & Ireland Guide)
Share
How to Choose the Correct Gas Regulator for Your Appliance (UK & Ireland Guide)
When using gas-powered appliances for cooking, heating, or outdoor activities, selecting the correct gas regulator is essential for both safety and efficiency. A gas regulator controls the flow and pressure of gas from the cylinder to the appliance, ensuring safe operation and consistent performance.
With several types of LPG regulators available, choosing the right one can sometimes be confusing. This guide explains the key factors to consider when selecting a gas regulator for appliances used across the UK and Ireland.
1. Understand Your Gas Type: Propane or Butane
The first step when choosing a gas regulator is identifying the type of gas your appliance uses. Most appliances run on either propane or butane, and each gas type requires a different regulator.
Propane
Propane gas is commonly used for outdoor appliances including:
- Gas BBQs
- Patio heaters
- Outdoor cooking equipment
Propane appliances typically require higher operating pressure than butane appliances.
Click here for Propane High Pressure Gas Regulators
Check out all regulators.
Butane
Butane is commonly used with:
- Indoor appliances
- Portable gas appliances
- Smaller outdoor equipment
Butane operates at a lower pressure, which means a different regulator is required.
Gas cylinders are available in a range of sizes, and this may also influence which regulator connection is required.
Click here for Butane High Pressure Gas Regulators
Check out all regulators.
2. Choosing the Right Regulator for Your Appliance
Different appliances require different pressure levels to operate correctly.
Boiling Rings
Boiling rings commonly use a low-pressure regulator. When using butane gas, a 28 mbar regulator is typically required.
Tip: Always check the appliance specifications to confirm whether a 28 mbar or 37 mbar regulator is required.
Gas BBQs
Gas BBQs commonly require a 37 mbar regulator when using propane gas. This pressure provides a stable and consistent flame suitable for grilling.
If the BBQ uses butane gas, it may require a 28 mbar regulator instead. Always check the manufacturer's guidelines before connecting a regulator.
Low pressure regulators rated around 1 to 1.5 kg per hour are commonly used for appliances such as BBQs, boiling rings and patio heaters.
Click here for Gas BBQ Regulators
3. Consider the Size of the Gas Cylinder
Gas cylinders come in different sizes including:
- 5kg cylinders
- 13kg cylinders
- 19kg cylinders
- 47kg cylinders
Smaller Cylinders
Smaller bottles such as 5kg cylinders are often used with smaller appliances and typically operate with low-pressure regulators around 28 mbar.
Larger Cylinders
Larger cylinders such as 13kg or 47kg propane bottles may require higher pressure regulators, typically 37 mbar or adjustable high-pressure regulators depending on the appliance.
High-pressure regulators are commonly used for appliances such as:
- Space heaters
- Blow torches
Some high-pressure regulators are also available with pressure gauges to help monitor gas pressure during use.
Click here for Butane High Pressure Gas Regulators
Click here for Propane High Pressure Gas Regulators
4. Check the Pressure Requirements of Your Appliance
Every gas appliance is designed to operate within a specific pressure range.
Most standard LPG appliances operate using:
- 28 mbar regulators for butane
- 37 mbar regulators for propane
Higher powered appliances may require adjustable or higher pressure regulators.
Using the wrong regulator pressure can lead to:
- Poor appliance performance
- Inefficient gas usage
- Potential safety risks
Always check the appliance manual or manufacturer specification before choosing a regulator.
5. Selecting the Correct Gas Hose
In addition to the regulator, you will need a suitable gas hose that connects the cylinder to the appliance.
Common LPG hose sizes include:
- 8mm gas hose
- 6.3mm gas hose
- 4.8mm gas hose
The hose must be suitable for the correct gas type and operating pressure.
Tip: Always inspect gas hoses regularly for cracks, wear, or damage to ensure a safe and leak-free gas connection.
Gas Pigtail Connections
Gas regulators can also be connected using rubber pigtail hoses.
Common pigtail connections include:
- W20 fittings which connect to M20 regulator connections commonly used on caravan systems
- POL fittings which connect directly to many UK propane cylinders such as 19kg and 47kg bottles
In the UK, propane cylinders commonly use POL connections.
In Ireland, regulators and adaptors are more commonly connected using butane nut (21.8mm left-hand thread) F-valve style connections.
Click here for Irish Regulator Kits
Click here for UK Regulator Kits
Butane Nut Connections
The 21.8mm left-hand thread butane nut is widely used with adaptors including:
- 20mm clip-on adaptors
- 21mm clip-on adaptors
- 27mm clip-on adaptors
- Campingaz cylinder adaptors
Click here to buy gas cylinder adaptors.
6. Regulator Safety Features
Safety is extremely important when working with LPG equipment. Many modern regulators include built-in safety features such as:
- Pressure relief valves
- OPSO
- Automatic shut-off protection
- Excess pressure protection
Always ensure the regulator is UKCA or CE approved, confirming it meets UK and European safety standards.
Click here for OPSO Regulators
Click here for all domestic regulators
7. Replacing and Maintaining Gas Regulators
Gas regulators do not last forever. Over time seals and internal components can wear, which may lead to gas leaks or reduced performance.
It is important to regularly inspect:
Gas regulators can last several years but should always be checked before use, particularly if they have been unused for long periods.
8. OPSO Regulators (Over Pressure Shut Off)
If you are using an older gas system, it may be worth upgrading to an OPSO regulator.
OPSO stands for Over Pressure Shut Off. These regulators include a safety device that automatically stops the gas supply if pressure becomes too high.
OPSO regulators are commonly used with:
- Caravan gas systems
- Twin cylinder changeover regulators
- Modern LPG installations
Newer safety guidance encourages the use of OPSO regulators for improved protection.
Conclusion
Choosing the correct gas regulator requires understanding the gas type, the pressure requirements of the appliance, and the size and connection type of the gas cylinder.
Whether you are using a boiling ring, BBQ, patio heater or another LPG appliance, matching the correct regulator will help ensure safe and efficient operation.
Always follow the appliance manufacturer’s recommendations and regularly check regulators, hoses and connections to maintain safe gas use.