Sources for 6” Flexible Ducting that’s not crazy tight on metal fittings

[Jim Andrew]

I have spiral pipe, but on one fitting, could not get the flex over the fitting, so used a coupling to slide the hose onto, and just stick the coupling into the pipe above.

[Alan Lightstone]

Are you having an issue putting the hose onto a Norfab hose adapter or their pipe?

The hose adapter

[Ben Rivel]

Have you tried using a little soapy water to lubricate the hose a bit. I had to do that a couple times for some of my hand crimped pipe to hose connections.

[Marc Jeske]

I have not used these fittings - But thinking.. could a person cut 3 or 4 kerfs w a fine hacksaw, small cutting wheel, etc and then ever so slightly bend in the tabs to reduce the OD at the end of the nipple and slightly taper it ?

Marc

[Jim Finn]

What I did : Using some sheet metal, I made a 6" long piece of pipe, small enough to fit inside the metal pipe and inside the flex pipe, and then caulk and clamp the three together.

[Alan Lightstone]

Have you tried using a little soapy water to lubricate the hose a bit. I had to do that a couple times for some of my hand crimped pipe to hose connections.

I tried with water, but not with any soap or other lubricant. I'll have to give this a try for the next hose fittings.

I found some 6" black rubber hose that I think will fit easier than the vinyl, but it's crazy expensive.

[Marc Jeske]

I have not used these fittings - But thinking.. could a person cut 3 or 4 kerfs w a fine hacksaw, small cutting wheel, etc and then ever so slightly bend in the tabs to reduce the OD at the end of the nipple and slightly taper it ?

Marc

So why not this ?

Make the cuts like 2" or so long.

Marc