Propane Tanks For Campers: Understanding Their Size And Capacity

Propane tanks are an essential part of any camping trip, providing fuel for cooking, heating water, and powering appliances. When it comes to camper propane tanks, there are two main types: ASME tanks and DOT cylinders. ASME tanks are typically found on motorhomes, permanently mounted, and can range from 20 to 100 pounds in capacity. On the other hand, DOT cylinders are removable and commonly used on travel trailers, fifth wheels, and campers. They usually come in sizes of 20, 30, or 40 pounds. The size of the propane tank needed depends on factors such as the size of the camper, the frequency of propane usage, and the duration of camping trips.

Camper propane tanks come in different sizes

Now, let's talk about the different sizes. The smallest propane tanks start at 7 lbs., while large industrial tanks can go up to 1000 lbs. The most common sizes for RVs, however, are 20 lbs., 30 lbs., and 40 lbs. tanks. A small travel trailer or truck camper typically has a single 20 lbs. tank, while a large fifth-wheel camper may have multiple 40 lbs. tanks, giving it a propane capacity of over 100 lbs.

ASME tanks, being permanently installed, can vary in size depending on the motorhome. A small Class C motorhome may have a 20 lbs. tank, while a larger Class A motorhome could have an 80-100 lbs. tank. DOT cylinders, being removable, give you more flexibility to choose the size that best suits your needs.

When deciding on the size of your propane tank, consider factors such as the size of your RV, how much propane your appliances use, and how often you use them. Additionally, think about the weight of the tank and whether you prefer the convenience of removable DOT cylinders or the larger capacity of built-in ASME tanks.

Remember, the amount of propane you need will also depend on the type of camping you plan to do. If you're camping in warm weather and using less propane for heating, you may need less. On the other hand, if you're boondocking off the grid and relying more on propane for various functions, you'll need a larger supply.

Camper propane tanks have varying weights

The weight of a propane tank includes the weight of the empty tank and the weight of the propane inside. A 20-pound propane tank, for example, weighs approximately 37 pounds when full. This includes the weight of the empty tank, which is about 17 pounds, and the weight of the propane, which is 20 pounds. Similarly, a 30-pound tank weighs around 55 pounds when full, and a 40-pound tank weighs around 72 pounds when full.

It is important to note that the weight of the tank can affect the handling of the camper. Heavier tanks can impact the weight distribution and towing capacity of the vehicle. Therefore, it is crucial to consider the weight of the propane tanks when planning a camping trip and to distribute the weight evenly to ensure safe handling.

Additionally, the weight of the propane tanks can also influence the refilling process. Some campers may prefer to carry multiple smaller tanks instead of a single large tank to facilitate easier refilling and handling.

When choosing the size and weight of the propane tanks for your camper, it is essential to consider factors such as the appliances you will be using, the frequency of use, and the duration of your camping trips. By considering these factors, you can ensure that you have sufficient propane to meet your needs without carrying excessive weight.

Camper propane tanks are of two types

ASME Tanks

ASME tanks are often used on motorhomes and are approved by the American Society of Mechanical Engineers. They are bolted to the frame of the RV and are not removable. They are usually found in large Class C and Class A motorhomes. ASME tanks are permanently mounted and typically have a capacity of 20 to 100 pounds. They are heavier than DOT cylinders of a comparable size as they are made of thicker steel.

DOT Cylinders

DOT cylinders, on the other hand, are removable and are commonly used on travel trailers, fifth wheels, truck campers, and some small motorhomes. They are approved by the Department of Transportation. DOT cylinders are generally smaller, ranging from 20 to 40 pounds. They are made of thinner steel than ASME tanks and are designed to be lifted and transported, hence the lighter option.

Sizing

Propane tanks are measured in pounds, with the smallest tanks starting at 7 lbs. and large industrial tanks ranging up to 1000 lbs. The most common sizes are 20, 30, and 40 lbs. tanks. The larger the tank, the more propane it can hold, but it is important to consider the weight restrictions of your RV.

Camper propane tanks have different capacities

The size of the propane tank varies depending on the type of RV and the specific model. The smallest tanks start at 7 lbs., while large industrial tanks can hold up to 1000 lbs. of propane. The most common sizes for RVs are 20 lbs., 30 lbs., and 40 lbs. tanks. However, the size can go up to 100 lbs.

The capacity of the tank also depends on whether it is an ASME or DOT tank. ASME tanks on motorhomes can range from 20 lbs. to 100 lbs. DOT cylinders, on the other hand, are typically smaller, with the most common sizes being 20 lbs. and 30 lbs. However, larger RVs like fifth wheels may have one or more 40 lbs. DOT cylinders.

The weight of the propane tank is also an important consideration. The weight includes both the weight of the tank itself and the weight of the propane inside. For example, a 20 lbs. tank weighs 17 lbs. empty, resulting in a total weight of 37 lbs. when full. Similarly, a 30 lbs. tank weighs 25 lbs. empty and 55 lbs. when full.

It is worth noting that propane tanks are only filled to 80% capacity to allow for gas expansion. This means that a 20 lbs. tank will contain approximately 4.6 gallons of propane, while a 30 lbs. tank will hold around 7 gallons.

When choosing the right size propane tank for your camper, it is essential to consider your usage patterns and the appliances you will be powering with propane. Factors such as the frequency of camping trips, duration of each trip, the number of appliances, and the climate you camp in will impact your propane requirements.

Camper propane tanks have different gauges

ASME tanks usually come with a built-in propane gauge that has a needle showing the amount of propane in the tank. This type of gauge uses a float inside the tank to measure the propane level. On the other hand, DOT cylinders may or may not have a built-in gauge, and if they do, it is usually found in higher-end models. For DOT cylinders without a built-in gauge, you can purchase and install an aftermarket gauge.

It is important to note that propane tank pressure can fluctuate up to 10% due to changes in temperature and elevation. Therefore, it is recommended to use a propane tank gauge to monitor the fuel level and avoid running out of propane. Additionally, regular maintenance of both ASME tanks and DOT cylinders is crucial to keep them in good condition.

When choosing a propane tank gauge, you can consider options such as inline gauges, float-type gauges, ultrasonic gauges, or magnetic sensors. Each type has its advantages and limitations, so it is essential to select one that best suits your needs and preferences.

Frequently asked questions