Anyone Got Idea For A Flush Plug for 4" PVC?

[Jeff A. Smith]

I've got a 4" PVC pipe coming through my concrete floor and it's relatively flush with the floor. I'd like to find something to cap it that is not a trip hazard. A traditional PVC cap would stick up. I'd like something no taller than 1/8". This is for DC, so I'm not looking for anything water tight or anything... just a relatively air-tight seal that doesn't stick up much.

I'm open to fabricating something, but would buy something if it existed. Any ideas?

Thanks!
Jeff

[Chris Fairbanks]

I have capped some of my pvc dust runs with just a circle cut out of wood with either a circle jig or on the lathe. Would that work?

[Curt Harms]

Dunno if something like the 4" adapter plus a flush plug would work for you?
https://www.plumbingsupply.com/clean....html#adapters

[Roy Petersen]

Dunno if something like the 4" adapter plus a flush plug would work for you?
https://www.plumbingsupply.com/clean....html#adapters

If the opening isn't threaded, one from further down that page should work:
https://www.plumbingsupply.com/clean...l#realtiteplug

[Jim Becker]

Turn a wooden plug on a lathe with a very slight taper and a groove for an o-ring around the outside. You can put a flush mount hinged handle in the top for when you might need to pull it.

[John Lanciani]

Is this semi-permanent or will it be removed regularly? If it is semi-permanent and I wanted it flush I would put a bread bag in the end of the pipe and fill it with spray foam. Trim flush after curing. Easy enough to remove later if or when you need to.

[Jamie Buxton]

If the plug should be easily removed and replaced, I'd install an internal ledge for the plug to rest on. I'd get another piece of 4" PVC, and cut a slot in it. The ring will be kinda springy, and you can bend it enough to slide it inside the PVC you have. Add PVC cement, and you get the internal ledge. Then cut a plywood circle to drop on top of the ledge. Maybe put a finger hole through it to make it easy to pull out.

[Matthew Curtis]

I would use my circle cutting jig on bandsaw and cut a small taper to it.

[Dan Friedrichs]

Test plug:
https://www.homedepot.com/p/Oatey-4-...403D/100204964

[John Olier]

If the pipe coming up the floor has threads use the regular cap and put it in upside down. All you have left is a dust catch on the floor

[Bill Dufour]

Why not use a flush plug from the hardware section? that is what they are designed for.
You may have to trim the pipe below flush to install a threaded adapter but again they make a tool for that or use a slotting cutter and a router. Or you could install a toilet flange and make a plug to fit that.
Bill D.
https://www.grainger.com/product/4WDN6?cm_mmc=PPC:+Google+PLA&s_kwcid=AL!2966!3!509 16684477!!!g!64218549921!&ef_id=WO2iwwAABJQZlW0j:2 0180723151601:s

https://www.homedepot.com/p/4-in-ABS...3HD4/100346793

https://www.homedepot.com/p/HDX-Inte...pe+internal%7D

[Jeff A. Smith]

Test plug:
https://www.homedepot.com/p/Oatey-4-...403D/100204964

Bingo! That's the answer for my specific situation. I like the fact that it seals airtight and yet remains removeable. Thanks to everyone on all the suggestions!

Jeff

[Van Huskey]

Bingo! That's the answer for my specific situation. I like the fact that it seals airtight and yet remains removeable. Thanks to everyone on all the suggestions!

Jeff

You could also use a solvent test plug with an even lower profile. https://www.homedepot.com/p/Oatey-4-...9103/100113503

When I read Dan's link I thought this was what he had linked to. YOu can just press one in. They wouldn't fare well being taken in and out a lot but they are CHEAP.

[Wade Lippman]

Bingo! That's the answer for my specific situation. I like the fact that it seals airtight and yet remains removeable. Thanks to everyone on all the suggestions!

Jeff

I've used that to seal a drain in my sailboat; it works fine, but will certainly be a trip hazard.

[Mathieu Girard]

I had the exact same problem and just designed and 3d printed a cap myself. Here is my design:

https://www.tinkercad.com/things/54zraQbLV4q

it works really good. You need a 3d printer though, or a friend who has one!