How much air pressure to blow out RV water lines?

How much air pressure to blow out RV water lines?
From my personal experience, blowing out RV water lines is an important step in winterizing your RV. It helps to prevent any water from freezing and causing damage to your pipes.

When it comes to air pressure, it is recommended to use an air compressor to help eliminate the water from the lines. The ideal air pressure to use is 30 psi, with the maximum pressure being 50 psi. This will ensure that the water is completely removed from the lines without causing any damage to the pipes.

It is also important to take a walk around the trailer and open the water valves one at a time while using the air compressor. This will help to ensure that all of the water is removed from the lines and that there is no water left in any of the pipes.

In summary, when blowing out RV water lines, it is important to:

  • Use an air compressor
  • Set the air pressure to 30 psi, with a maximum of 50 psi
  • Take a walk around the trailer and open the water valves one at a time
  • Ensure that all of the water is removed from the lines to prevent any damage to the pipes

How Much Air Pressure To Blow Out Rv Water Lines?

Hey there fellow RV enthusiasts! As the winter months approach, it’simportant to make sure your RV is properly winterized in order toprevent any damage from freezing temperatures.

One crucial step in this process is blowing out the water lines toensure all remaining water is removed and won’t freeze. But how much airpressure should you use when blowing out those lines?

It’s a question we often get asked here at our maintenance shop, andone that deserves some attention. In this article, we’ll dive into thedetails of just how much air pressure is needed for proper RV water lineblowout, so you can avoid any costly repairs come springtime.

So grab a cup of coffee and let’s get started!

Overview Of Rv Water Lines

As an experienced RV maintenance expert, it is crucial to understandthe importance of maintaining your water lines. With winter just aroundthe corner, it’s essential to take proper precautions and winterize yourvehicle before storing it away until spring.

One of the most critical winterizing tips is blowing out your RVwater lines with compressed air. Before connecting lines for thisprocess, make sure you have the right materials on hand. You’ll need anair compressor capable of producing at least 60 PSI and a fitting thatcan connect directly to your city water inlet valve.

It’s also important to remove any water filters during this processas they can become damaged by compressed air pressure. By followingthese steps, you can ensure that your RV water lines are well-maintainedthroughout the year and protected from freezing temperatures comewintertime.

Factors to consider when blowing out water lines include adequate airpressure, ensuring all faucets and valves are open during the process,and taking care not to over-pressurize any individual line or faucet. Byproperly managing these factors, you can effectively blow out your RVwater lines and avoid costly damage caused by frozen pipes in colderclimates.

Factors ToConsider When Blowing Out Water Lines

As mentioned in the previous section, properly maintaining your RVwater lines is crucial for preventing damage and ensuring a steady flowof clean water. One important aspect of this maintenance is blowing outthe water lines before winterizing or storing your RV for an extendedperiod of time.

Before you begin blowing out your RV water lines, it’s essential tocheck all connections and make sure they are tight and secure. You’llalso want to drain all tanks completely to prevent any leftover waterfrom freezing and causing damage.

To blow out the lines, you’ll need an air compressor with an airregulator set at no more than 60 psi, as higher pressure can causedamage to the plumbing system. It’s recommended to use a dedicated hosefor this process, as using a regular garden hose can introduce unwantedcontaminants into the system.

Now that you know what equipment is needed, let’s discuss how toactually go about blowing out the water lines. But first, alwaysremember safety precautions when working with compressed air systems;wear eye protection while handling hoses and avoid pointing them atyourself or others.

In our next section we will talk about tools needed for blowing outwater lines – including detailed information on each tool and why it’snecessary!

Tools Needed ForBlowing Out Water Lines

If you’re looking to blow out your RV water lines, you’ll need an aircompressor. A pneumatic blow gun is also a great tool to have, as it’sdesigned specifically for blowing out water lines. Make sure you havethe right hose and fittings to connect the blow gun to the aircompressor. And don’t forget the air line connectors – they’ll help youquickly disconnect the blow gun from the compressor. Last but not least,don’t forget your safety gear. You’ll need safety glasses and earprotection.

Air Compressor

Hey there fellow RV enthusiasts!

When it comes to blowing out your water lines, one of the mostimportant tools you’ll need is an air compressor. There are many optionson the market, but portable compressors are a great choice for those whowant something easy to store and transport.

Make sure to check the maximum PSI (pounds per square inch) rating ofany compressor you’re considering, as this will affect how much pressureit can provide for blowing out your lines. Additionally, considerinvesting in an air tank so that you have a reserve of pressurized airavailable if needed.

Proper maintenance of your compressor is crucial for ensuring itslongevity and effectiveness, so be sure to follow all recommendedguidelines for care and upkeep.

With the right equipment and know-how, blowing out your RV’s waterlines should be a breeze!

Pneumatic Blow Gun

Now, let’s talk about another essential tool for blowing out yourRV’s water lines: the pneumatic blow gun.

This handy device attaches to your air compressor setup and allowsyou to direct pressurized air exactly where it needs to go in order toclear out any remaining water from your pipes.

When installing a blow gun, make sure it is securely attached andproperly regulated so that you can control the amount of air pressurebeing used.

Proper air pressure regulation will prevent damage to your RV’splumbing system and ensure that all water has been removed beforestorage.

With an air compressor and pneumatic blow gun, you’ll have everythingyou need for a successful winterization process!

Hose & Fittings

Now that we’ve covered the importance of a pneumatic blow gun, let’smove on to another crucial tool for blowing out your RV’s water lines:hose and fittings.

Connectors, adapters, and seals are all essential pieces when itcomes to properly hooking up your air compressor setup to your RV’splumbing system. It is important to ensure that you have the correctsizes and types of connectors and adapters in order to avoid leaks ordamage during use.

Additionally, properly sealed connections will prevent any air fromescaping before it reaches the pipes. By investing in high-quality hosesand fittings, you can guarantee a successful winterization processwithout any hiccups along the way.

For cold water lines, I’d recommend a pressure of around 30 psi. Forhot water lines, I’d go a little higher and suggest 40-50 psi.

Cold Water Lines

Hey there fellow RV enthusiasts!

When it comes to winterizing your rig, one important step is usingcompressed air to blow out the water lines. Let’s focus specifically onthe cold water lines for a moment.

First and foremost, it’s crucial to use the recommended air pressurelevels to avoid damaging your pipes. Typically, this ranges from 30-50PSI depending on factors such as water temperature and pipematerials.

It’s also important to note that blowing out the lines with onlycompressed air may not completely remove all of the water in the system.To ensure maximum protection against freezing temperatures, considerusing an anti freeze solution designed for RV plumbing systems afteryou’ve used compressed air to blow out the lines.

Stay safe and happy camping!

Hot Water Lines

Now that we’ve covered the cold water lines, let’s shift our focus tothe hot water lines.

When it comes to winterizing your RV, both sets of lines require careand attention.

It’s important to remember that the recommended air pressure levelsfor blowing out hot water lines may differ from those of cold waterlines.

Be sure to consult your owner’s manual or a professional technicianfor specific guidance on this matter.

Additionally, keep in mind that clogged lines can also cause issueswith your hot water system during colder months.

To prevent this, consider using pipe insulation designed for RV useor seeking assistance from a maintenance expert.

Remember – taking proper precautions is key when it comes to coldweather care for your RV!

Safety ProcedureFor Blowing Out Water Lines

As an RV maintenance expert, I recommend following a safety procedurewhen blowing out water lines to prevent potential harm or damage. Firstand foremost, make sure you have the proper tools for the job. Thisincludes a pressure gauge that can measure up to 60 PSI and enough airsupply to complete the task.

Here are three important tips to keep in mind when blowing out yourRV’s water lines:

  1. Open all drain valves: Before starting the process, open all ofthe RV’s faucets and drain valves so that any remaining water can flowout.

  2. Check water pump: Make sure that the water pump is turned offbefore beginning this process as it could be damaged if left on whilethere is no water in the system.

  3. Start with low pressure: Begin by setting your compressor at 30PSI and gradually increase until you reach around 50-60 PSI. Be carefulnot to exceed this range as too much pressure can cause damage to yourpipes.

Following these cleaning tips will ensure your RV’s plumbing stayssafe from freezing during winter months.

Once finished, remember to turn off your compressor and close alldrain valves properly.

Remember, taking care of your RV requires more than just keeping itclean – implementing winterizing tips like blowing out water linesannually helps protect against costly repairs later down the road.


As an expert in RV maintenance, I cannot stress enough the importanceof properly blowing out your water lines before winter. Failure to do socan result in costly and time-consuming repairs come springtime.

Firstly, it is crucial to understand that the recommended airpressure levels for blowing out your RV water lines vary depending onfactors such as the size of your rig and the complexity of its plumbingsystem. Always consult your owner’s manual or a professional technicianfor guidance.

Secondly, it is essential to use the proper tools for this task,including an air compressor with a regulator and blowout plug. Usingmakeshift tools or skipping steps can lead to accidents and damage yourRV’s delicate water lines.

Lastly, always follow safety procedures when performing anymaintenance tasks on your RV. Wear protective gear like goggles andgloves, turn off all electrical power sources, and ensure there are noopen flames nearby while you work.

In conclusion, taking care of your RV’s water lines should be at thetop of every RVer’s pre-winter checklist. By following these tips andseeking advice from professionals where necessary, you can enjoyworry-free travels year-round!