Recently our RV’s bathroom sink stopped draining. OK it drained a little bit but it was VERY slow. Definitely a clogged drain!
No problem, we thought, we’ve had clogged drains in our RV before. We got this. So, we did what we have done in the past.
You are watching: How to Unclog a REALLY Clogged RV Sink Drain?
Before we start, let’s talk about what not to do – you definitely do NOT want to use something like Drano in your RV – it is far too caustic for the RV plumbing system.
Uh oh! The drain was still clogged and very SLOW to drain.
We have never had such a stubborn drain clog – in the past any slow drainage issues were easily resolved by following the steps above.
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This awesome sink & shower plunger! I’ll admit I was skeptical but it worked incredibly well.
We opened the grey tank valve (while connected to a sewer connection), filled the sink with some water and started plunging.
The plunger has the space for 4 cups of water so you can really push and pull a lot of water through the pipes to clear any clogs. It felt like it was actually the pulling action that cleared most of the clog (and pulled gunk into the sink).
Sure enough, the plunger pulled a lot of gunk out of the drain and within 5 minutes the sink was draining again!
Next time I’ll be jumping right to the plunger!
It was a five minute fix and easy!
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Check the inline vents and the roof vents. – Poor venting can cause slow drainage and stinky sewer smells.
Inline vents can wear out and ours were fairly old so we replaced both the kitchen and bathroom inline vents.
The inline vents are located under the sink above P-trap – they screw off and back on again pretty easily. You’ll want to add a bit of vaseline or plumbers tape to the threads to make sure you get a good seal.
If we hadn’t wanted to replace them anyhow we would have taken the inline vent off of the kitchen sink temporarily and put it on the bathroom sink to determine if it resolved the issue.
Roof vents can get clogged with debris or something like a wasps nest. So use caution when checking for a blockage.
That’s it for now. The sink and shower plunger is definitely a keeper and will be the first thing I grab if our drains are ever clogged again. I might even plunge the drains once in a while just to make sure they stay clear.
Source: https://gardencourte.com
Categories: Kitchens
This post was last modified on 11/10/2023 10:38
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