Attn. Plumbers Residential home question

[Pixguy]

Additional connections where the purple is evident but not not plentiful.

The other pipe on the first photo is the central vac piping I believe.

 

[Tractor Seabee]

Plumbers are a funny bunch about “marking” their work. One wants colored primer and glue so he knows where he’s been and others want no marks at all- they think it looks more professional! It all has to pass a pressure test which DWV should never see after that.

I worked a job once that was all certified work and inspected. We had to tape off the joints so only a 1/8" band of purple primer showed on the pipe and the end of the fittings. That proved we had used the primer? There was a specific protocol to make the joints we had to follow and were tested on to get our "Certified" certificate.

Ron

 

[Tractor Seabee]

Every leak that I've dealt with on PVC has been from somebody not using purple primer. In cities that have Inspectors that I've dealt with, when they see PVC, they want to see purple primer. While I understand that drain lines are not under pressure like PVC water lines, and you can get away using a glue instead of the two part system of softening the PVC with the purple primer and then welding the PVC joint together with the Clear Solvent, if there is going to be an issue in the future, it will be at the joint.

Has anybody ever seen a leak on PVC where purple primer and Heavy Duty Clear PVC Solvent was used?

Yes! Some are hard to tell; usually not installing to full depth, not twisting the joint after making, solvent allow to dry too much, or moving too soon after making. On certified work you have to initial each joint you make, same as certified welders and brazers. Too many failures and down the road you go.

Ron

 

[kenmac]

Inspectors here will give you a red sticker her if they don't see purple primer.:drink:

same here. No purple primer. No pass inspection. Same with PVC venting on a 90% furnace. they must see purple primer on the joints, or it don't pass

 

[Steppenwolfe]

There are joint sealants now that do not require primer and they come in clear. Some mechanical designers still call for purple primer in their specs.

Ron

Purple primer is required by code in all commercial projects, not sure about residential.

 

[Steppenwolfe]

Since you opened up this can of worms, is your duct work in the pictures metal or fiberboard?

 

[kenmac]

Since you opened up this can of worms, is your duct work in the pictures metal or fiberboard?

From the looks. I would say it's metal insulated on the outside rather the inside. Most companies are now doing this because of the new code for insulation size /thickness, and you get much better air flow

 

[Steppenwolfe]

From the looks. I would say it's metal insulated on the outside rather the inside. Most companies are now doing this because of the new code for insulation size /thickness, and you get much better air flow

Yes, you are right. Not sure fiberboard is still out there. I did notice a big hunk of flex at the end of the picture, we don't allow more than 5 to 6 ft of flex to be used.

 

[aczlan]

It has to be that low to clear the duct all the way to the right in the photo. Or, he'll need another step down.

I would want a second drop till it gets to the wall so that I was less likely to hit my head on it.

Aaron Z

 

[Pixguy]

I would want a second drop till it gets to the wall so that I was less likely to hit my head on it.

Aaron Z

It does kill that space under the stairs to get to but the area is 8 high and 2300sf and likely will be unfinished during my ownership so no big deal.