Wash Machine drain

[LazyPup]

PVC pipe is made to the Iron Pipe Standard (IPS) in sizes 1/2", 3/4" 1", 1-1/4". 1-1/2", 2", 2-1/2", 3", 3-1/2", 4", 5", 6", 8", 10", 12", 18" & 24" and with wall thicknesses conforming to IPS sched. 20. sched. 30, sched. 40, sched. 80 sched. 100, sched.120 & sched. 200.

All of the above pipe is labeled as conforming to ASTM (American Society of Testing & Materials) specification D-1785 for pressure piping applications, however for DWV (Drain,waste & Vent) applications we may only use PVC pipe that is specifically labeled as conforming to ASTM specification D-2665.

Under ASTM D-2665 ONLY SCHEDULE 40 in sizes 1-1/4", 1-1/2", 2", 3", 4", 6". 8". 10", 12", 18" & 24" are listed as approved for DWV applications.

PVC schedule 40 pipe in the sizes listed above will be listed as approved under both ASTM D-1785 & ASTM D-2665.

Note that there is no 2-1/2" or 3-1/2" and no wall thickness other than schedule 40 is listed as approved for DWV under ASTM D-2665.

Installers should all be aware of these facts because code clearly states that when installing the pipe it must be positioned in such a manner that the labeling on the pipe is clearly visible for inspection. If you install a pipe where the labeling is against a wall or upside down in a trench where the inspector cannot see the ASTM listing, he or she would be well within their legal authority to red tag your job, and in most cases they don't even tell you why.

[The Builder]

2 1/2 inch drain line fellows. ha ha ha To many hackers on the pc. haha

[LazyPup]

While there is no 2-1/2" PVC DWV pipe, it should be mentioned here that the code standard for a washing machine standpipe is a 2" trap & drain, however code will allow us to increase the size of a trap or drain by one nominal trade size, which means you could legally install a 3" standpipe, trap and drain line.

[The Builder]

I don't know what neck of the woods you'll from. NO 2 1/2" drain pipe. ha ha. You wanna bet. And just for that I'll get you the other peice to go along with the pipe. ha ha.

[Redwood]

Originally Posted by The Builder

I don't know what neck of the woods you'll from. NO 2 1/2" drain pipe. ha ha. You wanna bet. And just for that I'll get you the other peice to go along with the pipe. ha ha.

We'll have to get Charlotte Pipe to start making it...

Charlotte Pipe Dimensional Drawing Catalog DWV Plastic Pipe

Charlotte Pipe Dimensional Drawing Catalog Cast Iron

Good luck with your bet!
You'll need it!