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.
=Seed Eco-Home 6=
*Plumbing file - [https://drive.google.com/drive/folders/1FtcP-Ljy2xHXry87OtCxtl8WBE7or4A3]


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.
= Pipe dimensions used in literature =
=== Macro ===
* O.D. - outer diameter.
To create Pipes 40 and 80 Schedule PVC pipes use [[File:create-pipe.fcmacro]].
* 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.


[[File:pvc-pipe-gui-screenshot.png|thumb]]
=Basic Parts=
[[File:pvc-pipe-cad-screenshot.png|thumb]]
*1.5" elbow -
*2" coupler - [[File:2inchcoupler.fcstd]]


=Elbows=
=Parts Generated Using the OSE Piping Workbench + Other=


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


==90° - Elbows ==
File:toiletparts.png| '''Toilet Parts''' - Includes closet flange, 3" elbow with 2" heel, long 3" elbow - [[File:toiletparts.fcstd]]
Described by 3 dimensions:
pipe size, schedule, G,H,M. Other dimensions are derived from NPS pipe-dimensions.


One can create 90° with alpha°-elbow macro. Just set alpha=90° and J = H.
File:rotatabletrap.png |'''1.5" rotatable trap''' -  FreeCAD -[[File:15rottrap.fcstd]]
I do not know why my parameter list uses "H" for 90°-elbows and "J" for
other elbows.


=== Macro ===
To create an 90° elbow, run [[File:create-elbow-90.FCMacro]].


[[File:pvc-elbow-90-gui-screenshot.png|thumb]]
File:2doublesanteetee.png |'''2" sanitary tee''' -  FreeCAD -[[File:2doublesantee.fcstd]]
[[File:pvc-elbow-90-cad-screenshot.png|thumb]]


==alpha° - Elbows ==
File:2doublefixtee.png |'''2" double fixture tee''' - Nibco site - [https://catalog.nibco.com/rfcconfirmation?name=all-categories&xcartid=27675] FreeCAD -[[File:2doublefixtee.fcstd]]
alpha, pipe size, schedule, H,J,M. Other dimensions are derived from NPS pipe-dimensions.


=== Macro ===
To create an elbow with an arbitrary alpha from 0° to 180°, run [[File:create-elbow-alpha.FCMacro]].


[[File:pvc-elbow-alpha-gui-screenshot.png|thumb]]
File:3to15bushing.png |'''3" to 1.5" reducer bushing''' - FreeCAD -[[File:3to15bushing.fcstd]]
[[File:pvc-elbow-alpha-cad-screenshot.png|thumb]]


= Couplings =
File:3wye.png |'''3" wye''' - size:80kb - FreeCAD -[[File:3wye.fcstd]]
== General (Centric) ==


A general coupling is used to create reducer and simple couplings.
File:345streetbend.png |'''3" 45 degree street elbow''' - size:80kb - FreeCAD -[[File:345streetbend.fcstd]]


The general coupling is described by 9 dimensions: POD, PID, POD1, PID1, X1, X2, N, M, M1. The dimensions POD, PID, POD1, and PID1 are derived from the pipe sizes.
File:1FKHDAF.png|'''1.5" 45 degree street elbow''' - size:80kb - FreeCAD -[[File:1545streetbend.fcstd]]
The are abbreviations of '''P'''ipe '''O'''uter '''D'''iameter and '''P'''ipe '''I'''nner '''D'''iameter.
The dimensions X1 and X2 are not official dimension names.  


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>


[[File:coupling-calculations.png]]
=Library of STEP Downloads from McMaster Carr=


The offset a1 is calculated in such a way, that the thinest part of the middle section is not smaller that walls on of the sockets on both sides.
Comparable in size to generated parts - except for some parts which are way too heavy.
Lengths a2, a3, a4 and angle b1 are derived from the dimensions and are only used to calculate a1.
<gallery perrow=6>
 
== Simple Coupling ==
A general coupling is described by 10 Dimensions: POD1, PID1, L, M, N. The dimensions POD1 and PID1 are not from a official specifications.
They are derived from pipe size and schedule.
 
[[File:simple-coupling.png]]


=== Macro ===
Run [[File:create-coupling.fcmacro]] to create a simple coupling.


==Reducer==
File:elbow.png |'''1" PVC Elbow''' - size:19kb - FreeCAD -[[File:1"-pvc-elbow.fcstd]],
The reducer coupling is described by 8 Dimensions: 4 Pipe dimensions (they follows from pipe sizes and schedule), L, M, M1, and N.


[[File:coupling-dimensions.png]]
File:elbowcomp.jpg |Note slight difference compared to generated - 0.15" wall for generated, 0.12 for downloaded.


=== Macro ===
File:1"-pvc-tee.jpg |'''1" PVC Tee''' - size:25kb - FreeCAD -[[File:1"-pvc-tee.fcstd]],
Run [[File:create-coupling.fcmacro]] to create a reducer coupling.
[[File:pvc-coupling-gui-screenshot.png|thumb]]
[[File:pvc-coupling-cad-screenshot.png|thumb]]


=Notations=
File:1"-pvc-valve.jpg |'''1" PVC Valve''' - size:500kb - FreeCAD -[[File:1"-pvc-valve.fcstd]],
* 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.


=Notes=
File:1"-34"-reducer.jpg |'''1"-3/4" PVC Bushing''' - size:13kb - FreeCAD -[[File:1"-34"-reducer.fcstd]],
"O.D." = "Average I.D."+2"Min. Wall"


=Tees=
File:1"-cross.jpg |'''1" PVC Cross''' - size:13kb - FreeCAD -[[File:1"-cross.fcstd]],
== Almost General Tees  ==
Described by parameters G, G1, G2, H, H1, H2, M, M1, and pipe dimensions. As pipe dimensions we use POD, POD1, PID, PID1.


[[File:tee-dimensions.png]]
File:2"-elbow.jpg |'''2" PVC Elbow''' - size:157kb - FreeCAD -[[File:2"-elbow.fcstd]],


=== Macro ===
File:2"-tee.png |'''2" PVC Tee''' -157k - STEP -[https://www.mcmaster.com/#2389k23/=1bcgk5c] - FreeCAD - [[File:2"-pvc-tee.fcstd]]
Run [[File:create-tee.fcmacro]] to create a tee.
[[File:pvc-tee-gui-screenshot.png|thumb]]
[[File:pvc-tee-cad-screenshot.png|thumb]]


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)


== Simple Tees ==
File:2"-3"-bushing.jpg |'''2"-3" bushing''' - size:161kb - STEP -[https://www.mcmaster.com/#2389k53/=1bchs2a] - FreeCAD - [[File:2"-3"-bushing.fcstd]]
Described by parameters G, G1, H, H1, L, M, and pipe dimensions. As pipe dimensions we use POD, POD.


[[File:simple-tee-dimensions.png]]
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]]


=== Macro ===
File:3"-2"-reducer.jpg |'''2"-1" reducer.''' - size:10kb - STEP -[https://www.mcmaster.com/#4880k338/=1bemizt] - FreeCAD - [[File:2"-1"-PVC-reducer.fcstd]]
Run [[File:create-tee.fcmacro]] to create a tee.


=Gallery=
<gallery perrow=6>
File:pvc-pipe-cad-screenshot.png |'''SCH80 1"  PVC pipe''' - size:4kb - FreeCAD -[[File:pvc-pipe-test.fcstd]],
File:pvc-elbow-90-cad-screenshot.png |'''90°-elbow test file''' - size:17kb - FreeCAD -[[File:pvc-elbow-90-test.fcstd]],
File:pvc-elbow-alpha-cad-screenshot.png |'''alpha°-elbow test file. Here alpha° is 45°.''' - size:19kb - FreeCAD -[[File:pvc-elbow-alpha-test.fcstd]],
File:pvc-tee-cad-screenshot.png |'''Tee test file''' - size:24kb - FreeCAD -[[File:pvc-tee-test.fcstd]]
File:pvc-coupling-cad-screenshot.png |'''Coupling test file''' - size:12kb - FreeCAD -[[File:pvc-coupling-test.fcstd]]


</gallery>
</gallery>


=Macros=
= FAQ =


Macros are now in a git repository [https://github.com/rkrenzler/ose-piping-library].
The elbow macro depends now on other files. See README.md for installation instructions.
== How to create a pipe macro ==
Steps to create GUI:
The original instruction are taken from [https://wiki.qt.io/QtCreator_and_PySide] but I (Ruslan) have problems with them. I adjusted them to FreeCAD.
# Create with QT Designer a Dialog based on QDialog class. Save the name for example add-nps-pvc-pipe-dialog.ui.
# 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.
= FAQ =
* Do we really want to 3D-print pipe fittings? Somehow I have doubt about mechanical properties of the 3D-printed products.
* 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.
*: 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/[[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
[[Category: Materials]] [[Category: Plumbing]]

Latest revision as of 04:39, 8 September 2025

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.

Seed Eco-Home 6

  • Plumbing file - [8]

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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