Looking for a flexible sink drain pipe material

[musigenesis]

My kitchen sink drain is going to follow a twisty path around behind my shower stall, joining with the tub drain on the underside of my bus. I'm looking for a flexible hose-like material that I can use for this purpose, and I'm wondering if this PVC bilge pump discharge tubing would work: https://www.lowes.com/pd/EZ-FLO-1-1-...ing/1000180583

This is the path my drain needs to follow:

[peakbus]

I would look for something with a smooth inside like PVC or vinyl hose. Less likely to clog up with gunk.

[rffffffff]

Maybe radiator hose? It’s large, smooth and flexible but I’m not sure what kinda lengths it comes in.

[Danjo]

Spa hose sold by the foot at Home Depot

[rossvtaylor]

Like peakbus said...stay away from anything that's corrugated on the inside. I cringe when I see people using that accordion-style flexible sink drain pipe they sell in the plumbing departments. Those pleats become traps for stinky, nasty gunk...


I can't tell from that photo if that bilge discharge tubing is smooth inside or not. If it is, that should work fine. We like to use kanaflex kanalite and it holds up really well. The interior wall is smooth. If you can find anything like that, you should be golden. Kanalite Blue

[Honeydipped]

Originally Posted by Danjo

Spa hose sold by the foot at Home Depot

I also suggest spa flex tubing. It is relatively smooth inside to not trap gunk, but it can be a little rigid (increasing with tube diameter); however, slight heating can help make bending a little easier. Plus you can use typical PVC cement for a good leak free seal. I worked with it a lot in undergrad/grad school in aquaculture.

[Phatman]

What Danjo said. 1 1/2” white pvc pool/spa hose. Glues just like regular schedule 40 pvc pipe. Works like a champ. Your build is really starting to come together Musigenesis. Keep up the great work !!!

[peteg59]

If you can't find anything local, I'd be amazed if you don't find what you need on this link:
https://www.mcmaster.com/tubing/plas...bing-for-flow/

[BeNimble]

Having made custom headers..you can take std 1.5in thin wall pvc drain pipe and cut and glue it into any path you need. Is it more work than a flex hose? of course. Cheaper? yes. does it look cool when done? absolutely.

You can also take regular pvc pipe and heat and bend into curved shapes.

[musigenesis]

Originally Posted by BeNimble

Having made custom headers..you can take std 1.5in thin wall pvc drain pipe and cut and glue it into any path you need. Is it more work than a flex hose? of course. Cheaper? yes. does it look cool when done? absolutely.

You can also take regular pvc pipe and heat and bend into curved shapes.

Huh, maybe that's the way to go. I'd be worried about having a lot of glue joints in this piece since it won't be accessible once the tub is placed, but heating and bending a single piece like that might do the trick.

[Native]

Go for it! I know you have it in you.

[musigenesis]

Originally Posted by rossvtaylor

Like peakbus said...stay away from anything that's corrugated on the inside. I cringe when I see people using that accordion-style flexible sink drain pipe they sell in the plumbing departments. Those pleats become traps for stinky, nasty gunk...


I can't tell from that photo if that bilge discharge tubing is smooth inside or not. If it is, that should work fine. We like to use kanaflex kanalite and it holds up really well. The interior wall is smooth. If you can find anything like that, you should be golden. Kanalite Blue

Yeah, I bought the hose I linked because it was $10 and worth a shot, but it's corrugated on the inside as well as the outside, so no bueno. At least I can use it for experiments and laying out the path for it.

[musigenesis]

Originally Posted by Phatman

What Danjo said. 1 1/2” white pvc pool/spa hose. Glues just like regular schedule 40 pvc pipe. Works like a champ. Your build is really starting to come together Musigenesis. Keep up the great work !!!

Thanks, Phat, I appreciate it.

[musigenesis]

Originally Posted by peteg59

If you can't find anything local, I'd be amazed if you don't find what you need on this link:
https://www.mcmaster.com/tubing/plas...bing-for-flow/

I don't know why I didn't think to check McMaster-Carr. They sell literally everything. I was a little overwhelmed by the massive number of choices, but I think this is what I would need: https://www.mcmaster.com/tubing/plas...air-and-water/. Pricey, though - a 10' length of 1.5" ID is going to be $43 (or three times that if I go for the more expensive variety).

[musigenesis]

Originally Posted by Native

Go for it! I know you have it in you.

Thank you, as always.

[Drew Bru]

Originally Posted by musigenesis

Huh, maybe that's the way to go. I'd be worried about having a lot of glue joints in this piece since it won't be accessible once the tub is placed, but heating and bending a single piece like that might do the trick.

Yup, I've successfully bent PVC by filling it with sand that's been heated it a skillet. Its super pliable that way, almost like a wet noodle. Pretty simple and fun, really.

[peteg59]

Originally Posted by musigenesis

I don't know why I didn't think to check McMaster-Carr. They sell literally everything. I was a little overwhelmed by the massive number of choices, but I think this is what I would need: https://www.mcmaster.com/tubing/plas...air-and-water/. Pricey, though - a 10' length of 1.5" ID is going to be $43 (or three times that if I go for the more expensive variety).

It is a bit pricy. The ease of installation is what would "sell" it for me, IMO.
No reason to use Tygon unless you are planning on flushing some chemicals that would corrupt a vinyl composition tubing...

[Native]

Originally Posted by Drew Bru

Yup, I've successfully bent PVC by filling it with sand that's been heated it a skillet. Its super pliable that way, almost like a wet noodle. Pretty simple and fun, really.

That does sound fun! I might have to try it just for the fun of it.

[Phatman]

I just tossed out an old PVC heater bender last week. Still worked..... what was left of it !!