PVC Pipe and Fittings Library: Difference between revisions

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=Pipes=
=Basics=
The dimensions of the PVC pipes can be found here [[PVC_Pipe]].
Wikipedia on Nominal Pipe Size (NPS) [https://en.wikipedia.org/wiki/Nominal_Pipe_Size],


We will use following guide line for position of a pipe: put one end (base) of the pipe onto the x-y plane. The center of the base has coordinate (0,0,0). The other end points to the positive  direction of the z-axis.
This is a library of all the current PVC Pipe and Fittings that have been made in freecad for OSE. Many fittings can be created using [[OSE Piping Workbench]].


Rationale: This is the same way FreeCAD places a new cylinder. We mimic the FreeCAD behavior for UI consistancy.
= Pipe dimensions used in literature =
* O.D. - outer diameter.
* Average I.D. - average inner diameter (why average?). This dimension determines the size of the pipe.
* Min. Wall - thickness of the pipe wall.
* Schedule - determines (indirectly) the thickness of the wall.
 
=Basic Parts=
*1.5" elbow -
*2" coupler - [[File:2inchcoupler.fcstd]]
 
=Parts Generated Using the OSE Piping Workbench + Other=
 
<gallery perrow=6>
File:3elbow.png |'''3" PVC Elbow'''. Standard height of 4.75" as in [https://www.mcmaster.com/2389K29/]. - size:20kb - FreeCAD -[[File:3"-pvc-elbow.fcstd]],


The default pipe length is 1ft. This is an arbitrary choice. When I use a macro, it will store the last length used by the user.
File:toiletparts.png| '''Toilet Parts''' - Includes closet flange, 3" elbow with 2" heel, long 3" elbow - [[File:toiletparts.fcstd]]


=Ellbows=
File:rotatabletrap.png |'''1.5" rotatable trap''' -  FreeCAD -[[File:15rottrap.fcstd]]


Useful links: [https://www.aetnaplastics.com/site_media/media/attachments/aetna_product_aetnaproduct/204/PVC%20Sch%2040%20Fittings%20Dimensions.pdf]


== Simple general elbows ==
File:2doublesanteetee.png |'''2" sanitary tee''' - FreeCAD -[[File:2doublesantee.fcstd]]
This is an intermediate solution. Here I do not follow particular NPT-Standards. Later I will translate the NPT-Parameters in these general dimensions.


To create general elbow with 6 Parameters:
File:2doublefixtee.png |'''2" double fixture tee''' - Nibco site - [https://catalog.nibco.com/rfcconfirmation?name=all-categories&xcartid=27675] FreeCAD -[[File:2doublefixtee.fcstd]]
* alpha - angle of the elbow.
* R1 - inner radius of the bending part.
* R2 - inner radius of the elbow.
* R3 - outer radius of the elbow parts.
* L1 - length of one part part of the elbow.
* L2 - length of the another part of the elbow.


I had problems to join all parts of the elbow in FreeCAD. The solution was to make the bent part a little bit smaller.
Probably the problem was caused by having many common or coplanar faces of the parts. See [https://www.freecadweb.org/tracker/view.php?id=2831].


==90° - Degree.==
File:3to15bushing.png |'''3" to 1.5" reducer bushing''' - FreeCAD -[[File:3to15bushing.fcstd]]
Described by 3 dimensions:
size, G,H,M. Other dimensions are derived from NPS pipe-dimensions.


=Notations=
File:3wye.png |'''3" wye''' - size:80kb - FreeCAD -[[File:3wye.fcstd]]
* O.D. - outer diameter.
 
* Average I.D. - average inner diameter (why average?). This dimension determines the size of the pipe.
File:345streetbend.png |'''3" 45 degree street elbow''' - size:80kb - FreeCAD -[[File:345streetbend.fcstd]]
* Min. Wall - thickness of the pipe wall.
 
* Schedule - determines (indirectly) the thickness of the wall.
File:1FKHDAF.png|'''1.5" 45 degree street elbow''' - size:80kb - FreeCAD -[[File:1545streetbend.fcstd]]
 
File:15elbow.png |'''1.5" elbow''' - size:30kb - FreeCAD -[[File:15elbow.fcstd]]
 
File:2tee.png |'''2 inch tee''' - size: 25k  - FreeCAD -[[File:2tee.fcstd]]
File:create-pipe-cad-screenshot.png |'''SCH40 1"  PVC pipe''' - size:5kb - FreeCAD -[[File:pipe-test.fcstd]],
File:create-elbow-cad-screenshot.png |'''Elbow test file.''' Here alpha° is 45°. - size:21kb - FreeCAD -[[File:elbow-test.fcstd]],
File:create-coupling-cad-screenshot.png |'''1"-1/2" coupling test file''' - size:17kb - FreeCAD -[[File:coupling-test.fcstd]]
File:create-bushing-cad-screenshot.png |'''1"-1/2" bushing''' - size:21kb - FreeCAD -[[File:bushing-test.fcstd]]
File:create-tee-cad-screenshot.png |'''1" tee test file''' - size:28kb - FreeCAD -[[File:tee-test.fcstd]]
File:create-cross-cad-screenshot.png |'''1" cross test file''' - size:34kb - FreeCAD -[[File:cross-test.fcstd]]
File:create-corner-cad-screenshot.png |'''1" outer corner test file''' - size:30kb - FreeCAD -[[File:corner-test.fcstd]]
</gallery>


=Notes=
=Library of STEP Downloads from McMaster Carr=
"O.D." = "Average I.D."+2"Min. Wall"


=Gallery=
Comparable in size to generated parts - except for some parts which are way too heavy.
<gallery perrow=6>
<gallery perrow=6>
File:pvc-pipe-nps-sch40-1d8.png |'''SCH40 1/8"  PVC pipe''' - size:5kb - FreeCAD -[[File:pvc-pipe-nps-sch40-1d8.fcstd]],
File:thumbnail-pvc-elbow-60deg.png |'''Elbow test file''' - size:5kb - FreeCAD -[[File:pvc-elbow-test-60deg.fcstd]]
</gallery>


=Macros=
== Pipes ==
To create Pipes 40 and 80 Schedule PVC pipes [[File:pvc-pipe-nps.fcmacro]]
[[File:pvc-pipe-nps-macro-screenshot.png]]


== Ellbows ==
File:elbow.png |'''1" PVC Elbow''' - size:19kb - FreeCAD -[[File:1"-pvc-elbow.fcstd]],
(Experimental)
 
Run [[File:create-elbow.fcmacro]] with parameters G, H and M from a table.
File:elbowcomp.jpg |Note slight difference compared to generated - 0.15" wall for generated, 0.12 for downloaded.
[[File:create-elbow-macro-screenshot.png]]
 
The resulting shape is
File:1"-pvc-tee.jpg |'''1" PVC Tee''' - size:25kb - FreeCAD -[[File:1"-pvc-tee.fcstd]],
[[File:90-deg-elbow-screenshot.png]]
 
File:1"-pvc-valve.jpg |'''1" PVC Valve''' - size:500kb - FreeCAD -[[File:1"-pvc-valve.fcstd]],
 
File:1"-34"-reducer.jpg |'''1"-3/4" PVC Bushing''' - size:13kb - FreeCAD -[[File:1"-34"-reducer.fcstd]],
 
File:1"-cross.jpg |'''1" PVC Cross''' - size:13kb - FreeCAD -[[File:1"-cross.fcstd]],
 
File:2"-elbow.jpg |'''2" PVC Elbow''' - size:157kb - FreeCAD -[[File:2"-elbow.fcstd]],
 
File:2"-tee.png |'''2" PVC Tee''' -157k - STEP -[https://www.mcmaster.com/#2389k23/=1bcgk5c] - FreeCAD - [[File:2"-pvc-tee.fcstd]]
 
File:2"-elbow-short.png |'''2" PVC Elbow - Short Nonstandard''' - size:4kb - STEP -[https://www.mcmaster.com/#4881k26/=1bcheo0] - FreeCAD - [[File:2"-pvc-tee-short.fcstd]] (file misnamed)
 
File:2"-3"-bushing.jpg |'''2"-3" bushing''' - size:161kb - STEP -[https://www.mcmaster.com/#2389k53/=1bchs2a] - FreeCAD - [[File:2"-3"-bushing.fcstd]]
 
File:3"-2"-reducer.jpg |'''2"-3" reducer. Note difference between a reducer and a bushing (last one)''' - size:161kb - Menards -[https://www.menards.com/main/plumbing/rough-plumbing/pipe-tubing-hoses-fittings-accessories/fittings/pvc-fittings/nibco-reg-3x2-reducing-pvc-coupling-dwv/p-1444449202566-c-8557.htm?tid=-6388088944482732916&ipos=4] - FreeCAD - [[File:3"-2"-reducer.fcstd]]
 
File:3"-2"-reducer.jpg |'''2"-1" reducer.''' - size:10kb - STEP -[https://www.mcmaster.com/#4880k338/=1bemizt] - FreeCAD - [[File:2"-1"-PVC-reducer.fcstd]]
 


</gallery>


= FAQ =


= How to create a pipe macro =
* Do we really want to 3D-print pipe fittings? Somehow I have doubt about mechanical properties of the 3D-printed products.
Steps to create GUI:
*: Yes.  For high pressure applications - 300 PSI - we would have to be very careful. For low pressure, such as 5 PSI, it's not a problem. Eventually, we want to refine printing techniques where our fittings can do what standard schedule 80 ABS fittings can do.
The original instruction are taken from [[https://wiki.qt.io/QtCreator_and_PySide|https://wiki.qt.io/QtCreator_and_PySide]] but I (Ruslan) have problems with them. I adjusted them to FreeCAD.
** Also with things such as part baking/[[FDM 3D Print Annealing | annealing]], composite filaments, and SLA or SLS Printers, very durable parts can be made. Granted i agree proper testing, and potentially getting "Listed" or whatever the [[Building Code]] / [[Insurance]] stuff would need


# Create with QT Designer a Dialog based on QDialog class. Save the name for example add-nps-pvc-pipe-dialog.ui
[[Category: Materials]] [[Category: Plumbing]]
# Convert add-nps-pvc-pipe-dialog.ui to python code running
#: pyside-uic add-nps-pvc-pipe-dialog.ui -o pipe-dialog.py
#: or call
#: pyside-uic --indent=0 add-nps-pvc-pipe-dialog.ui -o pipe-dialog.py
#: to use tabs as indention.
#: If you use the FreeCAD macro editor, pay attention that the indention of pyside-uic and of the editor are the same.
# Insert content of the methods setupUi(self, Dialog) and retranslateUi(self, Dialog) from pipe-dialog.py (How can I insert here a block of python code?) into your macro file.

Latest revision as of 19:16, 25 August 2023

Basics

This is a library of all the current PVC Pipe and Fittings that have been made in freecad for OSE. Many fittings can be created using OSE Piping Workbench.

Pipe dimensions used in literature

  • O.D. - outer diameter.
  • Average I.D. - average inner diameter (why average?). This dimension determines the size of the pipe.
  • Min. Wall - thickness of the pipe wall.
  • Schedule - determines (indirectly) the thickness of the wall.

Basic Parts

Parts Generated Using the OSE Piping Workbench + Other

Library of STEP Downloads from McMaster Carr

Comparable in size to generated parts - except for some parts which are way too heavy.

FAQ

  • Do we really want to 3D-print pipe fittings? Somehow I have doubt about mechanical properties of the 3D-printed products.
    Yes. For high pressure applications - 300 PSI - we would have to be very careful. For low pressure, such as 5 PSI, it's not a problem. Eventually, we want to refine printing techniques where our fittings can do what standard schedule 80 ABS fittings can do.
    • Also with things such as part baking/ annealing, composite filaments, and SLA or SLS Printers, very durable parts can be made. Granted i agree proper testing, and potentially getting "Listed" or whatever the Building Code / Insurance stuff would need
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