Help identify this plumbing part and how to install…

[Pikachu]

I’m doing a bath faucet reinstall and I had the old plumbing removed prior to taking photos. So now there is a piece of flexible pipe jutting from the wall that I do not know or how it should be installed.

Can someone tell me what this flexible pipe (see red circle) does and how it should be installed? I.e. do I connect it to a P trap? Is it a vent pipe?

Thanks in advance.

 

[John Gayewski]

That's your dishwasher pump pumping toward your sink base. You need to hook it either to the garbage disposal dishwasher inlet or a tee in the tailpiece of the sink drain piping.

 

[Sponsor]

 

[Pikachu]

John > Tks for the advice! Just to clarify, I should connect the flexible hose to the waste tee as shown here?

 

[John Gayewski]

John > Tks for the advice! Just to clarify, I should connect the flexible hose to the waste tee as shown here?

View attachment 90117

No. There is a tailpiece with a built in barbed inlet for a dishwasher. Maybe type in tailpiece with inlet.

 

[Storm rider]

You said bath faucet, so I'm thinking that it may be a condensate drain line. Install is the same principle, you need a tailpiece with an inlet.

Oatey 1-1/2 in. x 8-1/2 in. White Plastic Slip-Joint Sink Drain Tailpiece Extension Tube with Hi-Line Branch C9818 - The Home Depot

Securely connect your dishwasher to a drainage system with the Everbilt Plastic Branch Tailpiece. Made of durable polypropylene material, it has a 10 psi max of working pressure. Features a Hi-Line connection

www.homedepot.com

 

[DirtyJerz]

Might be the angle of the photo, but isn’t the diameter of that flex pipe way bigger than those inlets?

 

[Reach4]

Is that big hose 7/8 inch ID, or what?

 

[Pikachu]

You said bath faucet, so I'm thinking that it may be a condensate drain line. Install is the same principle, you need a tailpiece with an inlet.

Yes, this is a bath faucet located on the 2/F with no dishwasher nearby. So it does appear to be a condensate drain line.

BTW, the mystery is solved. I managed to locate the old drain pipe and will simply buy a new replacement that has the inlet drain.

Thank you all for the help!

 

[Pikachu]

Is that big hose 7/8 inch ID, or what?

Yupe - that big hose is 7/8 inch ID.

 

[John Gayewski]

You can't hook a condensate line directly to you your plumbing.

I don't know where the bath drain comes into play for any reason. Why does a bath drain have a condensate line hooked to it? That isn't right. You need a real air gap for hvac condensate lines.

 

[WorthFlorida]

Attic Air Handler for AC?. Usually it is a 3/4 PVC and 3/4" is coming out of the wall.

 

[Reach4]

Yupe - that big hose is 7/8 inch ID.

https://www.homedepot.com/p/InSinkE...SinkErator-Garbage-Disposal-DWC-00/100162549? is an adapter used to feed disposals.

I am not finding the dimensions I was looking for, but a piece of 3/4 CPVC pipe is 7/8 OD. That might serve as an intermediate in adapting.

I was thinking an air gap was only required if the device outputting the condensate was hooked to the potable water system.

 

[DirtyJerz]

You need an air gap to prevent the pump from siphoning waste back up the line…this looks like a recipe for trouble.

 

[wwhitney]

You can't hook a condensate line directly to you your plumbing.

California Plumbing Code (UPC) 801.2 requires an air gap or an air break. Later sections in Chapter 8 require an air gap for some cases, like a dishwasher, but I didn't see anything requiring an air gap in this application.

My initial understanding is that a sink tailpiece with a side inlet would constitute an air break, but I'm not certain. I don't find the definition particularly enlightening:

Air Break. A physical separation which may be a low inlet into the indirect waste receptor from the fixture, appliance, or device indirectly connected.

This commentary discusses the difference between an air gap and an air break. The difference that is clear to me is that an air break doesn't have to discharge above the flood rim level of the fixture. Whether it needs to discharge into the bowl (as illustrated) rather than the tailpiece of a sink isn't clear to me. Both cases would provide vertical clearance from the trap seal.

IAPMO

Cheers, Wayne

 

[Tuttles Revenge]

Air gaps and breaks are designed to prevent cross contamination of potable water. The reason you wouldn't have a condensate drain hooked up to your sewer is to prevent sewer gases from escaping through a non trapped condensate pipe. In this instance the sink p-trap prevents sewer gases from escaping through the condensate.

 

[John Gayewski]

California Plumbing Code (UPC) 801.2 requires an air gap or an air break. Later sections in Chapter 8 require an air gap for some cases, like a dishwasher, but I didn't see anything requiring an air gap in this application.

My initial understanding is that a sink tailpiece with a side inlet would constitute an air break, but I'm not certain. I don't find the definition particularly enlightening:

Air Break. A physical separation which may be a low inlet into the indirect waste receptor from the fixture, appliance, or device indirectly connected.

This commentary discusses the difference between an air gap and an air break. The difference that is clear to me is that an air break doesn't have to discharge above the flood rim level of the fixture. Whether it needs to discharge into the bowl (as illustrated) rather than the tailpiece of a sink isn't clear to me. Both cases would provide vertical clearance from the trap seal.

IAPMO

Cheers, Wayne

I take an air break to be an instance where you drain onto the floor which then flows into a floor drain. An air I take to mean "hanging" above the drain.

Either way you can't have a direct connection from the sewer system to the hvac system.

 

[John Gayewski]

California Plumbing Code (UPC) 801.2 requires an air gap or an air break. Later sections in Chapter 8 require an air gap for some cases, like a dishwasher, but I didn't see anything requiring an air gap in this application.

My initial understanding is that a sink tailpiece with a side inlet would constitute an air break, but I'm not certain. I don't find the definition particularly enlightening:

Air Break. A physical separation which may be a low inlet into the indirect waste receptor from the fixture, appliance, or device indirectly connected.

This commentary discusses the difference between an air gap and an air break. The difference that is clear to me is that an air break doesn't have to discharge above the flood rim level of the fixture. Whether it needs to discharge into the bowl (as illustrated) rather than the tailpiece of a sink isn't clear to me. Both cases would provide vertical clearance from the trap seal.

IAPMO

Cheers, Wayne

Looks like an air break must go into the receptor. I think once you're into the tailpiece (and this is always how I've understood it) your into the sewer system.

 

[wwhitney]

Looks like an air break must go into the receptor. I think once you're into the tailpiece (and this is always how I've understood it) your into the sewer system.

I agree that is a reasonable inference from the picture. But the wording doesn't exactly say that. So I think the status of a tailpiece connection under the UPC is still debatable.

Under the IPC (not relevant to the OP in California), seems like a tailpiece connection is definitely an air break. Section 802.3.2 says "An air break shall be provided between the indirect waste pipe and the trap seal of the waste receptor."

Chapter 8 Indirect/Special Waste: Indirect/Special Waste, Alabama Plumbing Code 2021 | UpCodes

UpCodes offers a consolidated resource of construction and building code grouped by jurisdiction

up.codes

Cheers, Wayne

 

[John Gayewski]

I agree that is a reasonable inference from the picture. But the wording doesn't exactly say that. So I think the status of a tailpiece connection under the UPC is still debatable.

Under the IPC (not relevant to the OP in California), seems like a tailpiece connection is definitely an air break. Section 802.3.2 says "An air break shall be provided between the indirect waste pipe and the trap seal of the waste receptor."

Chapter 8 Indirect/Special Waste: Indirect/Special Waste, Alabama Plumbing Code 2021 | UpCodes

UpCodes offers a consolidated resource of construction and building code grouped by jurisdiction

up.codes

Cheers, Wayne

Copied from your earlier post.


Air Break. A physical separation which may be a low inlet into the indirect waste receptor from the fixture, appliance, or device indirectly connected.

I definitely don't think this is worth arguing over, but if they are saying physical seperation that means the piping can't connect. They then go on to say you can discharge into a low inlet in the receptor. I guess I don't know why they would say receptor if they mean tailpiece or piping.

The issue I think would be the definition of the receptor. Which must be able to be readily cleaned. Whereas a tailpiece or stand pipe cannot. Which is why standpipes have their own rules.


I think people do this a lot in hot climates Florida for example, I think a lot of them go into the tailpiece. But while it's debatable it's not done here.

 

[Jeff H Young]

Its a air conditioner condensate connects to a wye branch on a lav or sink . must be a few million in California