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Things to Know About LPG Regulators and Fittings

Things to Know About LPG Regulators and Fittings

What are LPG regulators and Fittings?

An LPG regulator is a device that controls the flow of gas from the cylinder to the appliance. It also acts as a safety valve in case of a gas leak. LPG regulators and fittings are two very important components in any gas system. The regulators manage the pressure of the gas flow, while the fittings connect the various components in the system.

Things to Know About LPG Regulators and Fittings

3. What is an LPG Regulator?

LPG is stored in bottles, and regulators are used to ensure that the right amount of gas is released when needed. Regulators are available in different sizes and types and can be used for both indoor and outdoor applications.

LPG regulators must be installed by a qualified technician and should be regularly inspected to guarantee they are functioning properly.

2. Are all LPG regulators the same?

Gas regulators act as a control valve that “regulates” the flow of gas from the cylinder to the appliance. Not all LPG regulators are the same, they come in different sizes, categories and pressure ratings. Remember to choose a regulator that is suitable for your LPG appliance.

There are two main types of LPG regulators – the first stage and the second stage.

First Stage Regulator

LPG is stored under pressure in cylinders and must be regulated before it can be used safely. First-stage regulators are designed to reduce the pressure of LPG from the storage vessel to a level that can be safely handled by the second-stage regulator.

First-stage regulators are typically located near the LPG bottle and are available in a variety of sizes and connection types.

Second Stage Regulator

A second-stage regulator often referred to as an LPG caravan regulator further reduces the pressure to an accurate measure for safe LPG appliance operation. In some cases, both first and second regulator types are used in a two-stage LPG gas regulator system to achieve the best pressure reductions for your appliances.

3. What are the benefits of having a two-stage regulator?

A two-stage regulator is a type of LPG regulator that has two internal chambers. The first chamber reduces the pressure of the LPG, while the second chamber further regulates the flow of gas.

This type of regulator is often used in caravan and RV applications, as it can help improve the performance of LPG appliances. Additionally, two-stage regulators can also help to prolong the life of gas bottles by reducing wear and tear.

They are designed to provide a constant flow of gas at a predetermined pressure. This makes them suitable for both low-pressure and high-pressure appliances.

The best thing about this regulator is the advantage of being able to maintain a constant flow of gas even when the cylinder is empty. This means that you can use your appliance for longer before you need to refill or change your bottle.

4. How do I know what size gas regulator I need?

LPG regulators are available in a range of sizes, depending on the type of appliance they will be used with. Most LPG regulators have an L-shape design, with an outlet for the LPG hose on one side and an inlet for the LPG cylinder on the other.

The size of the regulator is determined by the diameter of the inlet. Typically, a small regulator will have less than 1cm inlet, while a large regulator will have a 2.5cm inlet. The outlet size will also vary, depending on the appliance it is being used with. For example, a cooker will require a larger regulator outlet.

When choosing an LPG regulator, it is best to check that it is compatible with both the LPG cylinder and the appliance it will be used with. You should also check that the regulator has the correct pressure rating for your appliance.

5. What are LPG fittings?

LPG fittings are specially designed for use with gas bottles and hoses. LPG is a highly flammable gas, so it’s important to ensure that all fittings are properly installed and maintained.

There are two main types of LPG fittings – the Prestige Oyster Lock (POL) and the British Standard Pipe (BSP).


The POLs are designed to meet the strictest safety standards, and it is one of the most popular LGP fittings on the market. They are easy to install and use, and they provide a safe and reliable connection for LPG-powered appliances.


British Standard Pipes are special types of adapters and connectors used to attach LPG hoses, bottles and appliances such as gas stoves, water heaters and BBQ grills. These gas fittings have a number of safety features that make them ideal for use with LPG bottles. They are also easy to install and use.

LPG Fittings

6. Which is more beneficial – POL or BSP fittings?

POL fittings are more expensive than BSP fittings, but they offer a number of benefits. They are easier to install, and they provide a more accurate and consistent flow of LPG. POL fittings are also less likely to leak than BSP fittings.

BSP fittings also have their own advantages. They are simpler and cheaper to manufacture, so they are often the preferred choice for lower-end LPG appliances. Additionally, they are more durable than POL fittings and can be used with a wider range of regulators.

Ultimately, the decision of which type of LPG regulator and fitting to use depends on your individual needs and preferences.

Contact Plus Gas to learn more about the proper type, use and installation of gas regulators and fittings!

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