insertion depths of schedule 40 PVC


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Old 01-07-23, 02:10 AM
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insertion depths of schedule 40 PVC

I am building a laundry sink/cabinet in my basement and the outlet pipe is above the level of the sink, so I need to install a pump under a 2-basin stainless steel sink. I am trying to lay out the plumbing, but I am unable to find these depths in order to (roughly) calculate the pipe lengths, and whether or not I will have enough room under the sink for all of the fittings. Maybe needing to increase the height of the counter...

I can't seem to find charts online that specify the intrusion depth of the pipe into the fitting, or male thread into female NPT.

I need:
1. Intrusion of 1-1/2" Schedule 40 PVC pipe into solvent fitting (some places say the depth of the hub = pipe thickness, other places say the pipe only sits 2/3 of the way into the fitting, not bottoming out).

2. Intrusion of 1-1/2" schedule 40 PVC male NPT into female NPT.

3. Intrusion of 1-1/4" schedule 40 PVC into solvent fitting

4. Intrusion of 1-1/4" schedule 40 PVC male NPT into female NPT.

I've read that there can be some variation in manufacturers, but was wondering if anyone has any rough average lengths?


Thanks,

--Sean
 
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Old 01-07-23, 05:04 AM
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Easiest is to measure. There is a hub inside each fitting that provides a stop for when the pipe is at full depth. Stick a tape measure inside the pipe until the tip touches the raised lip (hub) inside and read the dimension at the end of the fitting to see how far the pipe will go into the fitting.
 
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Old 01-07-23, 05:24 AM
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A simple google search has the information!

https://www.aetnaplastics.com/site_m...Dimensions.pdf
 
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Old 01-07-23, 05:31 AM
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Yeah, I found the Aetnaplastics PDF as well, but it lacks some information. The hub depth is the depth of the socket, but some places state that solvent fittings only intrude 2/3 of the distance into the socket (i.e. don't bottom out at the hub). But even if they do, that's fine I just need the intrusion depths of the threaded fittings.

I found https://torqbolt.com/npt-threads-nat...specifications

which does list the depth the threaded fitting sits (L1), but I'm not sure that this is referring to steel pipe or PVC pipe, or whether or not the two are compatible for a given pipe size.

--Sean
 
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Old 01-07-23, 07:32 AM
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When dry fitting the pipe might only go 1/2 to 2/3 into the joint. When lubricated by the glue/solvent they should be seated fully with a firm push and some twisting.

If you are concerned that you might not get the pipe all the way into the fitting measure the depth of the hub/ridge inside the fitting. Then mark that dimension on the pipe. When you shove the pipe into the fitting your mark should be about at the end of the fitting.
 
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Old 01-07-23, 11:11 PM
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I just need the intrusion depths of the threaded fittings.
I missed the threaded portion.

https://www.goodyearrubberproducts.c...g1.Page525.pdf
 
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Old 02-12-24, 04:30 AM
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Where to tie into existing Drain Line?

So, the project is coming along, I built the cabinet/countertop for the sink.

I installed the in-line drainage pump per manufacturer's recommendations.

My question now is where do I discharge the (pressure) drain line into the existing drainage system?

Can I use the existing 2" standpipe for the washing machine discharge (and if so, do I have to plumb in a new standpipe/P-trap to discharge the washing machine?)

Or do I have to break into the existing 4" drain-line with a new Wye to accommodate the laundry sink discharge line?

Any help/advice would be appreciated.

Thanks,

--Sean




 

Last edited by leonardsean; 02-12-24 at 04:33 AM. Reason: Lost text of the post
 

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