My two favorite black tank dumpin’ gadgets


By Tony Barthel
Dealing with the black tank is one of the least enjoyable parts of the RV lifestyle. When a product comes along that makes the process even a little bit friendlier, I’m in. As such, two Camco products have really made my black tank dealings less miserable and have taken some of the frustration out of parts of this process. 

RhinoFLEX RV Sewer Fitting Wrench Set

The first is the RhinoFLEX RV Sewer Fitting Wrench Set. Essentially this is simply a two-piece plastic wrench that goes around your sewer hose fitting and provides enough leverage to make sure that it locks properly in place. 

Using the two handles on the sewer fitting wrench, you grab the sewer hose where it comes together and use this product to lock it in place. I have found a wee bit of bar soap on the fittings also helps to encourage these pieces to come together without gumming them up nor causing any other damage. 

Camco sewer hose wrench

Bending over and trying to convince two pieces of a sewer hose to lock in place is not how I want to spend my last day at camp and the darned hose always seems more reticent if the night before was spent with friends around the campfire who share my love of craft beer and feel that I should try all the varieties that were brought. 

Rather than practicing the words my mother warned me not to say, this simple two-piece wrench snicks the hose fittings together so I don’t have a larger issue to deal with.

You can buy one for yourself here

Camco RhinoFLEX six-in-one sewer cleanout plug wrench

The second is the Camco RhinoFLEX six-in-one sewer cleanout plug wrench. This is another simple plastic wrench but is designed to convince the sewer cap at the campground that you really do mean business. Essentially it has six different fittings molded into the ends of the wrench enabling you to open sewer caps of all sizes. 

Camco sewer wrench

I have found that sand and other grit gets into these sewer caps and while a plumber’s wrench would certainly get this job done, this simple lightweight Camco wrench does just fine and doesn’t weigh down the black tank tote in my camper by much. This is one of those tools that I use very infrequently, but when I need it I am thrilled that it’s aboard. 

I was recently teaching an RV 101 class at Clear Lake Campground and loaned my sewer fitting wrench set to a fellow camper. She had had trouble getting the two lengths of her sewer hose to seat well, which had resulted in one of those situations you don’t want on YouTube. These simple plastic wrenches got the job done and she was a happy camper with zero unfortunate spills. 

Since the wrench set is so lightweight, it doesn’t add much weight to your sewer contraption box, but it certainly does the job well and is quite handy. 

It’s also clear that the folks at Camco are either avid RVers or are listening to RVers, as these simple, lightweight but very usable tools are just a few of the things I have in my RV from Camco that just make the whole experience a little bit more pleasant. I also feel a little bit better about buying them since they’re made in the USA. 

You can get one of these wrenches here.


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11 days ago

I carry way too many tools , including drills , sockets , pliers ,terminals , bungees, tyewraps , tape etc , so i find these USELESS but that is only ME !
others are different and if it helps them then its great
and they wont rust if they are thrown in the rv metal box …

Donald E Pearce Sr
11 days ago

The sewer hose wrenches do help when there is the occasional need. I do have large water pump plyers for the campground cap (when needed). Many campgrounds are now using the spring loaded caps that solves that issue, though. Only one note about safety. Please bring/use disposable hand protection/gloves! Remember, take only pictures, and leave only footprints!
Stay safe, healthy, and enjoy the great American outdoors!

Vanessa Simmons
18 days ago

I have both of these. I was using the wrench to try to get the hose on the kitchen valve and broke it. They don’t fit really tight on any hoses I’ve tried but they do help some.

18 days ago

Tony I’m sorry for your brains lack of thought process. You must be a millennial.
And a weak one at that. In 12 years of RVing, I never had trouble twisting my Rhino Flex
hose connector on to the RV. Just keep the connection clean. And OMG a pair of channel locks will unscrew that sewer cap, and they have a lot more uses than that sewer cap wrench that only fits one size sewer cap. Hell most sewer caps half the time, or gone.
What a waste of money.

18 days ago
Reply to  SDW

Oil filter pliers work well, are metal and cheaper.

3 days ago
Reply to  Robbie

My first travel trailer, and we just tested it. Came home to test the drain hose directly into our septic tank. No problem getting it on, but getting it off, no way (standard Camco 20′ hose.) I’ll be definitely digging out the oil filter wrench, or buying a 5″ channel lock pliers- don’t think I’ve ever had one that big, despite having most tools.
Anyway, the article and the discussion is very valuable to help avoid issues when out at a campsite…

Sandy Perley
13 days ago
Reply to  Tony Barthel

Thank you Tony for that reply! As a single senior female with arthritis in my hands I find it very difficult to get my sewer fittings in place. I have the ring wrench but I don’t really understand quite how to use it. The fitting on my class c is really low and close to the ground and hard to see as well. I would love to see a video on how to use it!

Robert C
12 days ago
Reply to  SDW

Your insulting comment was not necessary or mature, SDW. You sound more like a millennial in your comment. Why not keep it friendly and helpful?

Old Timer
10 days ago
Reply to  SDW

Usually we mirror the way we feel about ourselves in our comments to others. It isn’t a stretch to understand this concept. The fruit that falls from the tree is a product of the tree. I know because I’m prone to make the same comments. I think my tough approach is best. Been working on it, but this tree had been growing in “that” for a while. Well see how it goes. Good luck all. The nice thing about Rving is that you learn so much.

Reinhard Dunse
19 days ago

Why not combine the two tools into one. Space is always limited in a RV

Bob P
18 days ago
Reply to  Reinhard Dunse

They couldn’t make twice the profit if it was just one wrench. I just carry a standard adjustable water pump style pliers, never had a fitting they wouldn’t work on

18 days ago
Reply to  Bob P

That’s what I told him. And like I said in my comment. Most of the time there’s not even a cover on the sewer pipe because no one wants to touch it to put it back on.

Kevin Watts
10 days ago
Reply to  SDW

Maybe some people just don’t want to use their everyday tools on the poop equipment.