PVC Pipe and Fittings Library: Difference between revisions

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=Basics=
=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]].
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]].


=Pipes=
= Pipe dimensions used in literature =
 
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],
 
A pipe is described by its outer diameter '''OD''', its wall thickness '''Thk''' and its height<ref>We use height instead of length  in order to make a pipe similar to a FreeCAD cylinder. These particular choice of pipe dimensions make it more compatible with pipes from flamingo workbench.</ref> H.
 
[[File:pipe-dimensions.png]]
 
=== Workbench ===
 
To create a pipe, click [[File:CreatePipe.svg]] in OSE piping workbench.
Adjust CSV '''pipe.csv''' in ''tables'' directory within workbench directory to add new pipe dimensions to the list.
 
[[File:create-pipe-screenshot.png|thumb]]
[[File:create-pipe-cad-screenshot.png|thumb]]
 
== Notations used by others ==
* O.D. - outer diameter.
* O.D. - outer diameter.
* Average I.D. - average inner diameter (why average?). This dimension determines the size of the pipe.  
* Average I.D. - average inner diameter (why average?). This dimension determines the size of the pipe.  
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* Schedule - determines (indirectly) the thickness of the wall.
* Schedule - determines (indirectly) the thickness of the wall.


=Elbows=
=Basic Parts=
*1.5" elbow -
*2" coupler - [[File:2inchcoupler.fcstd]]


Useful links: [https://www.aetnaplastics.com/site_media/media/attachments/aetna_product_aetnaproduct/204/PVC%20Sch%2040%20Fittings%20Dimensions.pdf]
=Parts Generated Using the OSE Piping Workbench + Other=


== Elbows ==
<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]],
An elbow is described by an angle alpha, outer pipe diameter POD, inner pipe diameter PID, H, J, M.
 
[[File:elbow-dimensions.png]]
 
=== Workbench ===
 
To create an elbow, click [[File:CreateElbow.svg]] in OSE piping workbench.
To add new elbows, adjust '''elbow.csv''' in ''tables'' directory within workbench directory.
 
[[File:create-elbow-screenshot.png|thumb]]
[[File:create-elbow-cad-screenshot.png|thumb]]
 
= Couplings =
 
A (general) coupling is described by dimensions: POD, POD1, PID, PID1, L, M, M1, N. The dimensions POD1 and PID1 are not from a official specifications.
They are derived from pipe size and schedule. In a reducer coupling, the pipe dimensions on one side POD and PID differ from on the other side POD1 and PID1.
 
[[File:coupling-dimensions.png]]
 
=== Workbench ===
To create a coupling, click [[File:CreateCoupling.svg]] in OSE piping workbench.
To add a new coupling to the part list, adjust '''coupling.csv''' in ''tables'' directory within workbench directory.
 
[[File:create-coupling-screenshot.png|thumb]]
[[File:create-coupling-cad-screenshot.png|thumb]]
 
= Bushings =
Important: There was a bug in workbench with version until 03. March 2018, where PID was used instead of POD.
 
A bushing is described by dimensions N, L and pipe dimensions. As pipe dimensions we use POD, PID1, and POD1.
 
[[File:bushing-dimensions.png]]
 
=== Workbench ===
'''Important''': There was a bug in workbench with version until 03. March 2018, where PID was used instead of POD.
 
To create a bushing, click [[File:CreateBushing.svg]] in OSE piping workbench.
To add a new coupling to the part list, adjust '''bushing.csv''' in ''tables'' directory within workbench directory.
 
[[File:create-bushing-screenshot.png|thumb]]
[[File:create-bushing-cad-screenshot.png|thumb]]
 
=Tees=
 
== Almost General Tees  ==
 
A tee is described by parameters G, G1, G2, H, H1, H2, M, M1, and pipe dimensions. As pipe dimensions we use POD, POD1, PID, and PID1.
 
[[File:tee-dimensions.png]]
 
 
=== Workbench ===
To create a tee click [[File:CreateTee.svg]] in OSE piping workbench.
To add a new tee to the part list, adjust '''tee.csv''' in ''tables'' directory within workbench directory.
 
[[File:create-tee-screenshot.png|thumb]]
[[File:create-tee-cad-screenshot.png|thumb]]


= Cross =
File:toiletparts.png| '''Toilet Parts''' - Includes closet flange, 3" elbow with 2" heel, long 3" elbow - [[File:toiletparts.fcstd]]


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


A cross is described by dimensions G, G1, G2, G3, H, H1, H2, H3, M, M1, and pipe dimensions. As pipe dimensions we use POD, POD1, PID, and PID1.


[[File:cross-dimensions.png]]
File:2doublesanteetee.png |'''2" sanitary tee''' -  FreeCAD -[[File:2doublesantee.fcstd]]


=== Workbench ===
File:2doublefixtee.png |'''2" double fixture tee''' - Nibco site - [https://catalog.nibco.com/rfcconfirmation?name=all-categories&xcartid=27675] FreeCAD -[[File:2doublefixtee.fcstd]]
To create a tee click [[File:CreateCross.svg]] in OSE piping workbench.  
To add a new cross to the part list, adjust '''cross.csv''' in ''tables'' directory within workbench directory.


[[File:create-cross-screenshot.png|thumb]]
[[File:create-cross-cad-screenshot.png|thumb]]


= Corners =
File:3to15bushing.png |'''3" to 1.5" reducer bushing''' - FreeCAD -[[File:3to15bushing.fcstd]]


An corner is described by dimensions G, H, M and pipe dimensions. As pipe dimensions we use POD and PID.
File:3wye.png |'''3" wye''' - size:80kb - FreeCAD -[[File:3wye.fcstd]]
[[File:outer-corner-dimensions.png]]


=== Workbench ===
File:345streetbend.png |'''3" 45 degree street elbow''' - size:80kb - FreeCAD -[[File:345streetbend.fcstd]]
To create a corner, click [[File:CreateCorner.svg]] in OSE piping workbench.
To add a new corner to the part list, adjust '''corner.csv''' in ''tables'' directory within workbench directory.


[[File:create-corner-screenshot.png|thumb]]
File:1FKHDAF.png|'''1.5" 45 degree street elbow''' - size:80kb - FreeCAD -[[File:1545streetbend.fcstd]]
[[File:create-corner-cad-screenshot.png|thumb]]


=Genaerated Library Parts=
File:15elbow.png |'''1.5" elbow''' - size:30kb - FreeCAD -[[File:15elbow.fcstd]]


<gallery perrow=6>
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-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-elbow-cad-screenshot.png |'''Elbow test file.''' Here alpha° is 45°. - size:21kb - FreeCAD -[[File:elbow-test.fcstd]],
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=Library of STEP Downloads from McMaster Carr=
=Library of STEP Downloads from McMaster Carr=
Comparable in size to generated parts - except for some parts which are way too heavy.
Comparable in size to generated parts - except for some parts which are way too heavy.
<gallery perrow=6>
<gallery perrow=6>


File:elbow.png |'''1" PVC Elbow''' - size:19kb - FreeCAD -[[File:1"-pvc-elbow.fcstd]],
File:elbow.png |'''1" PVC Elbow''' - size:19kb - FreeCAD -[[File:1"-pvc-elbow.fcstd]],
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File:2"-elbow.jpg |'''2" PVC Elbow''' - size:157kb - FreeCAD -[[File:2"-elbow.fcstd]],
File:2"-elbow.jpg |'''2" PVC Elbow''' - size:157kb - FreeCAD -[[File:2"-elbow.fcstd]],


File:2"-tee.jpg |'''2" PVC Tee''' - size:8kb - STEP -[https://www.mcmaster.com/#2389k23/=1bcgk5c] - FreeCAD - [[File:2"-pvc-tee.fcstd]]
File:2"-tee.png |'''2" PVC Tee''' -157k - STEP -[https://www.mcmaster.com/#2389k23/=1bcgk5c] - FreeCAD - [[File:2"-pvc-tee.fcstd]]


File:2"-tee-short.jpg |'''2" PVC Tee - Short Nonstandard''' - size:4kb - STEP -[https://www.mcmaster.com/#4881k26/=1bcheo0] - FreeCAD - [[File:2"-pvc-tee-short.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:2"-3"-bushing.jpg |'''2"-3" bushing''' - size:161kb - STEP -[https://www.mcmaster.com/#2389k53/=1bchs2a] - FreeCAD - [[File:2"-3"-bushing.fcstd]]
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</gallery>
</gallery>
= OSE Piping Workbench =
[[File:OsePipingWorkbenchIcon.svg]]
Implemented are:
* pipe
* coupling
* bushing
* elbow
* tee
* cross
* outer corner
[[File:OsePiningWorkbenchScreenshot.png|600px]]
== Installation ==
In a Linux system
$ mkdir ~/.FreeCAD/Mod
$ cd ~/.FreeCAD/Mod
$ git clone https://github.com/rkrenzler/ose-piping-workbench.git
[[File:check.png]] Command line instructions work on Ubuntu 16.04
Hint:For those new to Linux, always remember Linux is case sensitive.
mkdir ~/.FreeCAD/Mod creates the mod directory inside of FreeCAD. this might already exist, and that is fine.
== Remarks about the coupling code ==
To create a simple coupling or a reduced we internally use a more general coupling.
This 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.
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:coupling-calculations.png]]
The offset a1 is calculated in such a way, that the thinest part of the middle section is not thinner than the walls on of the both sockets.
Lengths a2, a3, a4 and angle b1 are derived from the dimensions and are only used to calculate a1.


= FAQ =
= FAQ =
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* 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/anealing, composite filaments, and SLA or SLS Printers, very durable parts can be made
** 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
 
 
 
 
 
=See Also=
 
*
 
 
 
 
=Useful Links=


*
[[Category: Materials]] [[Category: Plumbing]]

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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