Repairing Guides

how to repair a rv black water tank

by Dr. Gregory Emard PhD Published 3 years ago Updated 2 years ago
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Can I repair or replace my RV black water tank myself?

  • Topical adhesives. The first option for repairs is topical adhesives, which can be used on either kind of plastic. ...
  • Chemical welding. If you have an ABS plastic tank, then you may be able to repair using chemical welding. ...
  • Thermal welding. If your black water tank is made of LDPE plastic, your best bet will be thermal welding. ...

Part of a video titled (:HowTo:) Permanently Fix a Leak/Crack in an RV Black or ...
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What you do want to use this fiberglass window screen you can get this at Home Depot. Pretty muchMoreWhat you do want to use this fiberglass window screen you can get this at Home Depot. Pretty much anywhere you want to use the fiberglass stuff not the the metal stuff.

Full Answer

How do you clean RV black tank?

How To Flush And Clean An RV Black Tank

  • Starting with the basics. When at your site with full hookups or when making a needed trip to the dump station, ensure that you drain the black tank first.
  • Everyone has their theory. Who knew, but there seems to be a hundred opinions of tried and true methods for keeping an RV black tank clean.
  • Tools of the Trade. ...
  • Tips of the Trade. ...
  • Conclusion. ...

How do you replace RV water tank?

What You Need to Know

  • Water Usage. Choosing a tankless system involves first calculating your water usage. ...
  • Electric or Gas. Propane or natural gas-powered tankless water heaters are usually the best choices for mobile homes.
  • Placement. You can install a tankless water heater on the inside or on the outside of your RV. ...
  • Costs. ...

How to clean black water tank in RVs?

Tips for Renting an RV

  • Corner Desk. This L-shaped farmhouse-style desk offers ample workspace, stretching 60 inches in both directions. ...
  • Sliding Barn Door TV Stand. ...
  • Console Table. ...
  • Dining Room Table. ...
  • Dining Chairs. ...
  • Swivel Chair. ...
  • Sauder Barrister Lane Bookcase. ...
  • Emaison Decorative Mirror. ...
  • Nightstand. ...

How to clear a clogged RV or camper Blackwater tank?

The Right Way to Clean Your RV’s Black Tank:

  1. Prepping Up. Before you begin with any plumbing work, you must prepare yourself, both mentally and physically. ...
  2. Cleaning the Line. Now on to the cleaning methods. ...
  3. Checking the Valves. In case cleaning the lines doesn’t work, you can try checking the valves. ...
  4. Using Chemicals. ...
  5. The Ice Cube Method. ...
  6. Boiling Water Method. ...

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How do you fix a cracked black water tank?

1:518:18Cracked RV Holding Tank Repair using G/Flex 655 Epoxy - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt might just do the job this wes system stuff is pretty good pretty good stuff so let's see what'sMoreIt might just do the job this wes system stuff is pretty good pretty good stuff so let's see what's inside this kit here. And goes only around 50 or 60 bucks kidney. In for the kit maybe less in the

How do you fix a crack in a camper septic tank?

0:2610:59Repairing Cracked RV Waste Tanks with Plasti-Mend - YouTubeYouTubeStart of suggested clipEnd of suggested clipThere's several ways to repair the tanks from the reading I've done there's plastic welding whichMoreThere's several ways to repair the tanks from the reading I've done there's plastic welding which involves some specialized tools to heat it up and I think I'd have to pull the tank.

How do you fix a leaking RV water tank?

2:286:35RV water tank leak and repair | TheRVAddict - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo i've actually got this leak see if i can get here this leak was fixed by putting a pipe thread onMoreSo i've actually got this leak see if i can get here this leak was fixed by putting a pipe thread on it and screwing it back in tight and so it's good start leaking from here that's. Because. I

How do you fix an ABS holding tank?

1:332:42How To Repair A Damaged RV Holding Tank - YouTubeYouTubeStart of suggested clipEnd of suggested clipApply a generous bead of resin around the patch. This bead should be a quarter-inch around the patchMoreApply a generous bead of resin around the patch. This bead should be a quarter-inch around the patch. And should come up over the top of the patch perimeter. If there are areas where there is tape.

Why is my black tank leaking?

If your black tank is only leaking when it's full, the problem typically isn't near the drain valve, but rather near the top at one of the connections (vent or drain pipe) or the tank itself has been compromised (ie, a crack near the top).

What kind of plastic are RV water tanks made of?

polyethylene plasticVarying in size and location, RV water tanks are usually made of ABS or polyethylene plastic. There is one for fresh water, gray water (waste from sinks and showers) and black water (waste water from a toilet).

Can you patch RV water tank?

2:4515:04Repairing A Cracked RV Tank | DIY Permanent RV Water Tank Repair!YouTubeStart of suggested clipEnd of suggested clipShop towels drill with a very very small drill bit this is a uh 8 inch drill. Bit. I got the resinMoreShop towels drill with a very very small drill bit this is a uh 8 inch drill. Bit. I got the resin fiberglass cloth all the fiberglass supplies i need picked them up from lowe's.

How do you repair a polyethylene tank?

0:415:00How to Repair a Polyethylene Agricultural Sprayer Tank - YouTubeYouTubeStart of suggested clipEnd of suggested clipClean the damaged area as well as you can with super clean plastic cleaner. Use a rotary tool with aMoreClean the damaged area as well as you can with super clean plastic cleaner. Use a rotary tool with a teardrop-shaped cutting bit to create a V groove and to grind away any crusty oxidized plastic.

Can you plastic weld a water tank?

I used these for a fresh water tank and worked well for plastic welding. It matched well with the tank. If you use a stainless steel mesh to reinforce what you're welding, you will most likely see through this.

Can ABS plastic be repaired?

0:254:47How to repair and reinforce large ABS plastic items using ABS slurry.YouTubeStart of suggested clipEnd of suggested clipThe cracks are sealed and watertight and the weak areas are far stronger now to make the ABS slurryMoreThe cracks are sealed and watertight and the weak areas are far stronger now to make the ABS slurry I cut a sheet of 2 millimeter abs in 250 grams worth of small pieces.

How do you repair a plastic water tank on an RV?

0:3910:56RV water tank repair - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo I'm just cleaning off all the dirt I've already scraped off the fiberglass repair kit that was onMoreSo I'm just cleaning off all the dirt I've already scraped off the fiberglass repair kit that was on there.

How do you repair a plastic water tank?

0:454:46Agricultural Tank Repair - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou can cut out the plug. Next place the plug over the hole and mark any areas that need to beMoreYou can cut out the plug. Next place the plug over the hole and mark any areas that need to be trimmed down use a grinder to do any necessary trimming.

What can cause a septic tank to crack?

This article takes a closer look at three common causes of septic tank cracks.Vehicular Weight. One of the most common causes of septic cracks involves vehicles driving or parking directly on top of the tank. ... Concrete Mix. Some concrete septic tanks consist of preformed concrete blocks mortared together. ... Expansive Soil.

Can you weld a RV hot water tank?

Welding cracks and pipes on a hot water tank is one method to fix a leaking water tank. You may choose to replace the water tank or fix it yourself. Welding a water tank can be completed with the right tools, saving you the expense of replacing the hot water tank.

How do you repair a plastic water tank on an RV?

2:4515:04Repairing A Cracked RV Tank | DIY Permanent RV Water Tank Repair!YouTubeStart of suggested clipEnd of suggested clipShop towels drill with a very very small drill bit this is a uh 8 inch drill. Bit. I got the resinMoreShop towels drill with a very very small drill bit this is a uh 8 inch drill. Bit. I got the resin fiberglass cloth all the fiberglass supplies i need picked them up from lowe's. For uh about 40 bucks

How do you fix a leak in an RV GREY water tank?

10:3411:16Repairing Our RV Grey Water Tank On The Road - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd i'm gonna put some silicone around that uh where i cut the coroplast. And then push it back upMoreAnd i'm gonna put some silicone around that uh where i cut the coroplast. And then push it back up in place to just kind of silicone it back in place. And uh call it good for now.

Where is the drain valve on a water tank?

The water tank drain valve is mounted as a removable center section in the whole drain valve assembly. Remove the 4 bolts that hold the assembly together.

Can RV water tanks be plugged?

Not only is it a health hazard, but if enough liquid has dissipated from the tank, then the solids will just accumulate in the bottom of the water tank. That can create a nasty situation when it finally results in a plugged RV waste system.

Can you save money on RV fuel?

For a few minutes of enduring a mildly offensive odor, you can save enough money to buy the fuel for you your next RV outing!

How to know when your RV fresh water tank needs repair

Are you losing fresh water? Do your sensors show a dip in water when you haven’t been using it at all? It’s even more obvious if you can see a crack in your fresh water tank and water coming out.

How to repair your fresh water tank

This is where things get interesting! A variety of fixes can temporarily and permanently stop RV fresh water tank leaks. Let’s go with easy and temporary first.

Preventing problems with your RV fresh water tank

RV fresh water tanks can crack for a variety of reasons, including weather and pressure. Most RV tanks also have an overflow valve to relieve potential pressure.

What should I do while waiting for repair?

Water is quite important to the human body. If you are off the grid camping and discover your fresh water tank has run dry due to a leak, the next option is to not use it.

Conclusion

Having good drinking water is important when out and about on the road. It’s also nice to be able to keep clean of course! Repairing your fresh water tank can be a bit of a chore, but it’s relieving to be able to hold fresh water, even temporarily while exploring other options.

Checking Holding Tank Capacity Video

I first priced out new tanks. They go for around $300 bucks and would be a hassle to change due to the topside input plumbing and vent pipes. Maybe there was a much less expensive way to repair/patch the old tanks. The cracks were still relatively thin at this point and only around 3-4 inches long. Seem a shame to gun the whole tank over them.

What is Plasti-Mend?

Plasti-Mend is a specially formulated mix of plastic resins and solvents designed to repair ABS based RV holding tanks. These are usually the black ones you see used for gray and black water. Not the clear or whitish looking ones traditionally used for fresh water. They are Polyethylene plastic, and Plasti-Mend won’t work.

Patching the Tank with Plasti-Mend

First thing I did was clean the whole area in and around the tank cracks with Simple Green Cleaner. I then used the included Scotch-Brite scrubber pad to rough up the ABS plastic surface.

Plasti-Mend RV Tank Repair Video

Once the Plasti-Mend patch had dried entirely a few days later, I tried filling the waste tanks. No leaks! I have to say I’m pleased with the repair; it was an inexpensive, easy fix for the cracked waste tanks. I’m glad I didn’t need to pull the tanks and hope the repair will last.

What is the best way to clean a black tank in an RV?

One of the more popular options, for an RV black tank cleaner, is to utilize a garden hose extension called an RV holding tank rinser. Camco makes a great model called the “Swivel Stik” that many RV owners swear by.

How to keep black water tank clean?

Fortunately, the availability of commercial chemicals and deodorizers makes it pretty simple to maintain your black tank on a regular basis. At the start of your camping trip, you should add a dose of RV black water tank treatment, which may come in liquid form (like Aqua-Kem) or in Tide-Pod-like packets (such as these, made by Firebelly Outfitters). Be sure to add in about a gallon of water, as well, which helps the chemicals do their job. Along with keeping tank odors down, these chemicals also have the ability to break down solid waste and toilet paper. That makes for a much smoother process when it comes time to dump your tanks — which we’ll get to in just a minute.

What is black tank in RV?

In addition to human waste, the RV black tank also collects water used to flush the toilet, and of course, toilet paper. Which, by the way, should be RV-specific toilet paper, which is more easily degradable and less likely to clog your rig’s sensitive plumbing system! 2.

What happens if you let black water drain?

If you let the black water tank drain freely, liquids flow through but solids get stuck, leading to a very messy situation. And by keeping the gray water tank closed off, you’re always building up soapy water that can be used to flush the detritus of your black water draining process through the hose!

What is a black water tank?

Your RV’s black water tank is a very important piece of equipment: it’s the tank under your rig that holds the waste water from your toilet. And while where everything goes when you “go” is no one’s favorite thing to think about, it’s part of what makes RVing so much more convenient and enjoyable than regular car travel or tent camping — no more relying on rancid pit toilets at the campground!

How to clean RV holding tanks?

While you can use mild dish detergent or ice to clean your tanks more thoroughly, avoid using harsher substances, like antifreeze, which can dry out the seals and ruin your sewer system.

How long can you go without dumping your RV?

For instance, if you’re traveling alone and frequently spending days outside of the RV adventuring, you might be able to last a week or longer without dumping the tanks. On the other hand, if you’re camping with a big family (or traveling in a smaller trailer or motorhome whose tanks aren’t exactly gigantic), you may find yourself emptying the tank every other day or so.

How to clean a blackwater tank in RV?

You can try another method, which involves dumping a soap solution down the toilet. Fill your blackwater tank halfway with water, then add a bit of liquid soap. Run your RV around for a bit and let the soap solution do its magic.

How to fix black water coming out of a tank?

You can fix this by manually opening the gate valve. A lot of blackwater will come out when you do so, so be prepared. If your tank starts draining like normal, then your issue is fixed.

How to check if gate valve is faulty?

It’s usually placed close to the greywater T-handle. Try pulling it. If the T-handle can be pulled back and forth with little to no resistance , then your gate valve is faulty.

How to get rid of pyramid plugs?

The easiest way to deal with pyramid plugs is with an auger, a kind of toilet snake. This will go deep into the toilet’s line and help pull out any visible clogs.

How to fill a black tank?

In this, you take boiling water and pour it down the toilet. You’ll need a lot of water, enough to fill half or three-fourths of your black tank.

What to wear when handling blackwater?

Before you begin with any plumbing work, you must prepare yourself, both mentally and physically. Always wear latex gloves when handling blackwater; this one’s a no-brainer.

Can you use a toilet snake on a black tank?

Toilet snakes are quite handy, but they’re not the right choice for freeing up a black tank. You shouldn’t use any toilet snake for your black tank. But it’s safe to use toilet sna kes to clean up the line that connects the toilet and the tank.

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