Underfloor LPG Tanks for Vans

Can You Fit Underfloor LPG Tanks to a Van? The Definitive Guide

For many seeking to optimise space within their van conversions or simply looking for a more efficient and convenient fuel source for their onboard appliances, the question of fitting underfloor LPG tanks often arises. The answer is a resounding yes, and it's a popular modification that offers numerous advantages. This comprehensive guide will delve into the specifics of installing underslung LPG tanks in vans, covering everything from the practicalities and benefits to the types of vehicles they can be fitted to and the crucial considerations involved.

Why Choose Underfloor LPG Tanks for Your Van?

The appeal of underslung LPG tanks in van conversions lies primarily in their ability to reclaim valuable interior space. Unlike traditional gas bottles stored inside the vehicle, which can consume significant living or storage area, underfloor tanks are mounted externally, typically beneath the chassis. This clever placement frees up interior room, allowing for more comfortable living quarters, better storage solutions, or even the possibility of a more compact and agile vehicle footprint. Furthermore, it enhances safety by keeping the gas supply outside the main living area.

Beyond space-saving, underslung tanks offer a more permanent and integrated solution. They are designed for a secure and robust mounting, ensuring they are well-protected from road debris and the elements. This means less fuss with refilling and replacing cylinders, as these tanks can hold a larger volume of LPG and are easily refillable at autogas stations.

Vehicle Compatibility and Bespoke Solutions

The good news is that underslung LPG tanks can be fitted to a wide variety of vans, particularly those used for campervan and motorhome conversions. The key to a successful installation lies in the availability of vehicle-specific fitting kits. These kits are engineered to precisely match the chassis of popular van models, ensuring a secure and compliant fit. Companies specialising in autogas solutions, like those mentioned, often develop these bespoke brackets through extensive practical experience.

Let's look at some examples of how this is achieved for common van chassis:

These examples highlight the importance of a tailored approach. Generic brackets are unlikely to provide the same level of safety and security as those specifically designed for your vehicle's chassis layout. Always ensure that any kit you purchase is confirmed as compatible with your exact van model and year.

Key Components of an Underslung LPG Tank System

An underslung LPG tank system for a van typically comprises several key components:

• The LPG Tank: These are specially designed, often cylindrical or rectangular, tanks built to withstand the rigours of being mounted externally. They come in various capacities to suit different needs, from powering a small campervan's cooker to a larger motorhome's heating and cooking systems.
• Mounting Brackets: As discussed, these are crucial for a secure installation. They are typically made from robust steel and are often powder-coated for corrosion resistance.
• Fill Point: This is the external connection where the tank is refilled with LPG. It's usually located on the exterior of the van.
• Regulator: This essential component reduces the high pressure of the LPG in the tank to a usable pressure for your appliances.
• Pigtails and Hoses: These connect the tank to the regulator and the regulator to your vehicle's internal gas lines.
• Safety Devices: Including excess flow valves and automatic shut-off valves to ensure safe operation.

Installation Considerations and Safety

While the concept is straightforward, the installation of an underslung LPG tank is a job that requires expertise and adherence to strict safety regulations. It's not a DIY task for the faint-hearted. Here's why professional installation is highly recommended:

• Chassis Integrity: Cutting or drilling into the vehicle's chassis must be done with precision to avoid compromising its structural integrity.
• Gas Safety: All connections must be gas-tight to prevent leaks, which can be extremely dangerous. Professionals are trained to perform leak detection tests.
• Regulatory Compliance: There are specific regulations governing the installation and use of LPG systems in vehicles. A professional installer will ensure your system meets all legal requirements.
• Tank Protection: The tank must be mounted at a suitable height to avoid damage from speed bumps, kerbs, or road debris, while also being accessible for filling.
• Ventilation: Although the tank is external, proper ventilation around the fill point and any associated components is still important.

Crucially, always ensure your installer is Gas Safe registered (or the equivalent in your region) for domestic and automotive gas systems.

Choosing the Right Tank Size

The capacity of the LPG tank you choose will depend on your intended usage. Consider the following:

• Appliance Consumption: How much gas do your cooker, heater, fridge, and hot water system consume?
• Duration of Use: How long do you typically use these appliances between refills?
• Travel Habits: Do you frequently travel to areas with readily available autogas filling stations?

It's often better to err on the side of a slightly larger tank to avoid frequent refills, especially if you plan extended trips or heavy appliance usage. Many suppliers offer a range of tank sizes, from compact units suitable for basic cooking needs to larger tanks that can comfortably run a full suite of motorhome appliances.

What LPG Appliances Can You Run?

Underslung LPG tanks are a versatile fuel source for a variety of essential van conversion appliances:

• Cookers and Hobs: The most common use, providing a reliable heat source for cooking.
• Ovens: Many campervans and motorhomes feature gas ovens.
• Refrigerators: Gas fridges are highly efficient and a popular choice for off-grid living.
• Water Heaters: Providing hot water for washing and showering.
• Space Heaters: Keeping your living space warm and comfortable during colder months.

The consistent and controllable flame provided by LPG makes it ideal for these applications. The pressure regulation is key to ensuring your appliances receive the correct gas pressure to operate efficiently and safely.

Finding the Right Kit and Supplier

When looking to fit an underslung LPG tank, sourcing a reputable supplier is paramount. Look for companies with a proven track record in autogas systems and van conversions. They should be able to offer:

• Vehicle-Specific Kits: As detailed earlier, these are essential for a safe and compliant installation.
• A Range of Tank Sizes: To cater to diverse needs.
• Associated Fittings and Spares: Ensuring you have all the necessary components for a complete system.
• Expert Advice: Don't hesitate to contact them if you're unsure about which kit or tank size is right for you. A good supplier will offer guidance and support.

Contacting suppliers directly via phone or email is often the best way to get personalised advice. For instance, if you're unsure which kit you need or if a particular tank will fit your specific van conversion, a quick call to a specialist can save you a lot of time and potential mistakes.

Frequently Asked Questions

Q1: Is it legal to fit an underfloor LPG tank to my van?
Yes, provided the installation is carried out by a qualified professional and meets all relevant safety standards and regulations. Reputable suppliers will ensure their kits and advice align with legal requirements.

Q2: Can I fit an underslung LPG tank myself?
While theoretically possible, it is strongly discouraged due to the critical safety aspects of gas installations and the need for precise chassis modifications. Professional installation is highly recommended for your safety and peace of mind.

Q3: How do I refill an underslung LPG tank?
Underslung tanks are refilled via an external fill point, typically located on the side of the vehicle. You can refill them at autogas stations, similar to how you would refuel a car running on LPG.

Q4: Will fitting an underslung tank affect my van's ground clearance?
The tank is mounted to minimise impact on ground clearance. However, it's essential to ensure it's installed at an appropriate height, as advised by the installer, to avoid potential damage from obstacles.

Q5: What happens if the tank is damaged?
Underslung LPG tanks are built to be robust. In the unlikely event of damage, they are equipped with safety features like excess flow valves that will shut off the gas supply. It's vital to have any damaged tank inspected and repaired or replaced by a qualified professional.

Conclusion

Fitting underfloor LPG tanks to a van is a highly practical and beneficial modification for anyone undertaking a campervan or motorhome conversion. It maximises interior space, offers a secure and integrated fuel solution, and powers a wide range of essential appliances. By choosing the right vehicle-specific kits, prioritising professional installation, and selecting a reputable supplier, you can ensure a safe, efficient, and enjoyable gas system for your adventures on the road. Always remember that gas safety is paramount, so entrust the installation to the experts.

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