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Difference between revisions of "Talbot Type Water Tap"

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==Abstract==
 
==Abstract==
# Paragraph description of the OSAT - why is it Appropriate? What need does it fulfil? Are there case studies you have found of a technology being used successfully?
+
* Talbot water taps are used extensively throughout the low income countries of the world. This type of tap is extremely useful for them, but is often quite expensive to purchase; sometimes so expensive that they can't get them. This type of tap allows for automatic shutoff of the water when it is released due to the water pressure pushing it closed. This 3D printable version is 89% cheaper than a standard quarter turn water tap (these are even cheaper than a Talbot tap). Not only is this OSAT low cost, it is also extremely easy to make: simple 3D print, no support material, no extra tools needed, and a very simple assembly procedure.
# Picture of completed print using your printer [[Image:Wood_WorkingClamp_Parts.png|200px|right]]
+
* Talbot Type Water Tap - closed position [[Image:Assembly_talbot_closed.JPG|300px|centre]]
  
 
== Bill of Materials==
 
== Bill of Materials==
# Provide a full BOM -- Materials needed for fabrication of device and alternative materials if they are not available, prices/sources of non-printable parts
+
* Printed Parts
## Upload and link to all source files from open source CAD
+
# Talbot Body (quantity = 1)
## Upload and link to all STLs
+
# Talbot Housing (quantity = 1)
 +
# Talbot Cap (quantity = 1)
 +
# Talbot Pin (quantity = 1)
 +
# [https://www.thingiverse.com/thing:4022023/files link to part files and STL files]
 +
 
 +
* Purchased Parts
 +
# Square cross section o-ring (quantity = 1) [[https://www.mcmaster.com/1171n126 link to part]]
 +
# Circle cross section o-ring (quantity = 2) [[https://www.mcmaster.com/9262k156 link to part]]
  
 
== Tools needed for fabrication of the OSAT==
 
== Tools needed for fabrication of the OSAT==
# [[AthenaII| MOST Delta RepRap]] or similar RepRap 3-D printer
+
* [[AthenaII| MOST Delta RepRap]] or similar RepRap 3-D printer
#
 
  
 
== Skills and Knowledge Necessary to Make the OSAT ==
 
== Skills and Knowledge Necessary to Make the OSAT ==
* If you used special skill – link to relevant Wikipedia or Wikiversity articles/courses
+
* N/A
  
 
== Technical Specifications and Assembly Instructions==
 
== Technical Specifications and Assembly Instructions==
# Provide directions for print/assembly - be detailed enough in your “how to” to ensure that someone could construct the device from your description. Consider the elegance of IKEA like instructions.
+
* Printing Directions
# Include print time estimate
+
# Print speed = 100 mm/s
# Include assembly time estimate
+
# Layer height = 0.10 mm
# Including drawings or pictures of the device at stage of assembly at minimum. (http://www.appropedia.org/Special:Upload)
+
# Infill = 100%
# Consider video if appropriate
+
# Print temp = 210 deg. C
{|style="border:1px solid #73BF73; background-color: #E6FFE6; margin-left:.1em; margin-top:2px; -moz-border-radius:15px;" align="right" width="150px"
+
# Material = PLA
!<big>Example video summary of textbook</big>
+
# No support needed for any of the prints
|-
+
* Assembly Directions
|<center>{{#widget:YouTube|id=yiJDx9dCfEQ}} </center>
+
# Start with tablot body [[http://www.appropedia.org/File:Assembly_talbot_1.JPG Picture]]
|-
+
# Put two circle profile o-rings into the grooves of the talbot body [[http://www.appropedia.org/File:Assembly_talbot_2.JPG Picture]]
|}
+
# Slide the talbot housing over the small diameter end of the talbot body [[http://www.appropedia.org/File:Assembly_talbot_3.JPG Picture]]
 +
# Slide the square profile o-ring over the small diameter end of the tablot body [[http://www.appropedia.org/File:Assembly_talbot_4.JPG Picture]]
 +
# Slide the tablot cap over the small diameter end of the talbot body and line up round holes in tablot body and talbot cap [[http://www.appropedia.org/File:Assembly_talbot_5.JPG Picture]]
 +
# Press talbot pin into the round holes that were just lined up [[http://www.appropedia.org/File:Assembly_talbot_6.JPG Picture]]
 +
# Thread finished part into desired 3/4" NPT female pipe fitting [[http://www.appropedia.org/File:Assembly_talbot_open.JPG Picture]]
 +
* Print time estimate = 3 hours and 55 minutes
 +
* Assembly time estimate = 10 minutes
 +
 
  
 
=== Common Problems and Solutions===
 
=== Common Problems and Solutions===
* Include common mistakes/problems to avoid in building your OSAT and how to overcome them
+
* Ensure your printer settings allow for accurately sized parts. If parts aren't properly sized, o-rings may not seal or will be too tight.
  
 
== Cost savings==
 
== Cost savings==
* If your solution is not a low cost one then it is not really appropriate.
+
* Commercially Available Option
# Estimate your costs
+
# Talbot valves are sold on a "request a quote" price basis, but are understood to be more expensive than standard quarter turn style taps. Because of this, I was unable to find a price for a Talbot valve and will be comparing this valve to a standard quarter turn style tap.
# Find a commercial equivalent, cite it and put the [url in square brackets]
+
# [https://www.mcmaster.com/47865k24 $14.41 for a standard quarter turn style tap]
# Calculate $ savings and % savings
+
 
 +
*Price Breakdown
 +
# 48g of PLA = $0.96 (assuming $20/kg)
 +
# square profile o-ring = [https://www.mcmaster.com/1171n126 $0.35 per valve (1 o-ring needed)]
 +
# circle profile o-ring = [https://www.mcmaster.com/9262k156 $0.27 per valve (2 o-rings needed)]
 +
# TOTAL COST = $1.58 per valve
 +
 
 +
*Price Comparison
 +
# Commerical = $14.41
 +
# 3D Printable = $1.58
 +
# 89% cost savings
  
 
== Benefited Internet Communities ==
 
== Benefited Internet Communities ==
* Name and add links to at least 5 using single brackets around [url name]
+
* [https://www.appropedia.org/Requests_for_3-D_printable_open_source_appropriate_technology Appropedia Requests for 3D Printable Open Source Appropriate Technology]
 +
* [https://www.appropedia.org/Open_Source_Appropriate_Technology OSAT]
 +
* [https://www.oshwa.org/ Open Source Hardware Association]
 +
* [https://www.nctr.sd/aoc/ African Open Source Center]
 +
* [https://opensource.com/ OpenSource.com]
  
 
==References==
 
==References==
  
* The sources of information (e.g. engineering handbooks, journal articles, government documents, webpages, books, magazine articles etc.). References should use the <nowiki> <ref> </ref> and <references/>  </nowiki>tags and can be in any format but should include all the information necessary for someone else to find the same information you did. <ref> web page: Talis Talbot Taflo Datasheet Available: https://www.talis-uk.com/talis-uk/user_upload/Talbot-Talflo-Datasheet.08.12.pdf</ref>
+
* The sources of information (e.g. engineering handbooks, journal articles, government documents, webpages, books, magazine articles etc.). References should use the <nowiki> <ref> </ref> and <references/>  </nowiki>tags and can be in any format but should include all the information necessary for someone else to find the same information you did. <ref>  
 +
web page: Talis Talbot Talflo Datasheet Available: https://www.talis-uk.com/talis-uk/user_upload/Talbot-Talflo-Datasheet.08.12.pdf</ref>
  
 
<references/>  
 
<references/>  
<nowiki>
 
Based on the developmental needs addressed (e.g. food, heat, electricity, clean water, health  care, etc.) be sure to label your device in the proper categories e.g. use [[Category:Water]]. Be sure to categorize your device so that it will be easy to find – for example “Low voltage connection basics” is categorized in
 
 
[[Category:How tos]]
 
[[Category:Electricity]]
 
[[Category:Electric lighting]].
 
 
</nowiki>
 
  
 
[[category:OSAT 3D-Printable Designs]]
 
[[category:OSAT 3D-Printable Designs]]

Latest revision as of 22:08, 4 December 2019

MOST Delta filament as guide.JPG This page was part of an MTU course MSE4777 OA and MSE4777 OB/MSE5777/EE4777/EE5777: Open-source 3-D printing

Please leave comments using the discussion tab. The course runs in the Fall semester. It is not open edit.


Talbot Type Water Tap[edit]

Project developed by Eric Bauer
Status
This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been prototyped.

You can help Appropedia by contributing to the next step in this OSAT's status.

Abstract[edit]

  • Talbot water taps are used extensively throughout the low income countries of the world. This type of tap is extremely useful for them, but is often quite expensive to purchase; sometimes so expensive that they can't get them. This type of tap allows for automatic shutoff of the water when it is released due to the water pressure pushing it closed. This 3D printable version is 89% cheaper than a standard quarter turn water tap (these are even cheaper than a Talbot tap). Not only is this OSAT low cost, it is also extremely easy to make: simple 3D print, no support material, no extra tools needed, and a very simple assembly procedure.
  • Talbot Type Water Tap - closed position
    Assembly talbot closed.JPG

Bill of Materials[edit]

  • Printed Parts
  1. Talbot Body (quantity = 1)
  2. Talbot Housing (quantity = 1)
  3. Talbot Cap (quantity = 1)
  4. Talbot Pin (quantity = 1)
  5. link to part files and STL files
  • Purchased Parts
  1. Square cross section o-ring (quantity = 1) [link to part]
  2. Circle cross section o-ring (quantity = 2) [link to part]

Tools needed for fabrication of the OSAT[edit]

Skills and Knowledge Necessary to Make the OSAT[edit]

  • N/A

Technical Specifications and Assembly Instructions[edit]

  • Printing Directions
  1. Print speed = 100 mm/s
  2. Layer height = 0.10 mm
  3. Infill = 100%
  4. Print temp = 210 deg. C
  5. Material = PLA
  6. No support needed for any of the prints
  • Assembly Directions
  1. Start with tablot body [Picture]
  2. Put two circle profile o-rings into the grooves of the talbot body [Picture]
  3. Slide the talbot housing over the small diameter end of the talbot body [Picture]
  4. Slide the square profile o-ring over the small diameter end of the tablot body [Picture]
  5. Slide the tablot cap over the small diameter end of the talbot body and line up round holes in tablot body and talbot cap [Picture]
  6. Press talbot pin into the round holes that were just lined up [Picture]
  7. Thread finished part into desired 3/4" NPT female pipe fitting [Picture]
  • Print time estimate = 3 hours and 55 minutes
  • Assembly time estimate = 10 minutes


Common Problems and Solutions[edit]

  • Ensure your printer settings allow for accurately sized parts. If parts aren't properly sized, o-rings may not seal or will be too tight.

Cost savings[edit]

  • Commercially Available Option
  1. Talbot valves are sold on a "request a quote" price basis, but are understood to be more expensive than standard quarter turn style taps. Because of this, I was unable to find a price for a Talbot valve and will be comparing this valve to a standard quarter turn style tap.
  2. $14.41 for a standard quarter turn style tap
  • Price Breakdown
  1. 48g of PLA = $0.96 (assuming $20/kg)
  2. square profile o-ring = $0.35 per valve (1 o-ring needed)
  3. circle profile o-ring = $0.27 per valve (2 o-rings needed)
  4. TOTAL COST = $1.58 per valve
  • Price Comparison
  1. Commerical = $14.41
  2. 3D Printable = $1.58
  3. 89% cost savings

Benefited Internet Communities[edit]

References[edit]

  • The sources of information (e.g. engineering handbooks, journal articles, government documents, webpages, books, magazine articles etc.). References should use the <ref> </ref> and <references/> tags and can be in any format but should include all the information necessary for someone else to find the same information you did. [1]