Help in finding a threaded polyethylene bush
Help in finding a threaded polyethylene bush
(OP)
I would appreciate a little help.
Im in the process of designing a small hand operated pump, similar to a stirrup pump. I need a polyethylene bush which the vertical rod will pass through. The hole for the rod to pass though will be about 10mm. The bush will screw into a BSP pipe, size to be confirmed, but the bigger the better. I can modify my design to fit a suitable bush.
Can anyone know of an off the shelf male threaded bush, with a 10mm hole in it?
I like in the UK, if that helps.
Thank you for your time
Im in the process of designing a small hand operated pump, similar to a stirrup pump. I need a polyethylene bush which the vertical rod will pass through. The hole for the rod to pass though will be about 10mm. The bush will screw into a BSP pipe, size to be confirmed, but the bigger the better. I can modify my design to fit a suitable bush.
Can anyone know of an off the shelf male threaded bush, with a 10mm hole in it?
I like in the UK, if that helps.
Thank you for your time





RE: Help in finding a threaded polyethylene bush
RE: Help in finding a threaded polyethylene bush
RE: Help in finding a threaded polyethylene bush
This stirrup type pump will be used and possibley assembled in rural Africa where skill levels are extremely low.
I need something ready simple that can be repaired locally. Here is where I am.
I have a 2 inch BSP pipe with an internal thread. I need something that fits into this that has a hole in it (ie a "bush") for a 10mm stainless steel rod that is one meter in length.
I need off the shelf parts that can be shipped and assembled on site.
I understand that the "bush"of the pump, with the up down motion will wear. Therefore I need an off the shelf part that can be replaced with a wrench.
Local conditions may be sandy, so wear is a factor.
Thank you for your interest and help
RE: Help in finding a threaded polyethylene bush
Have the bush made to suit want you want to suit the pump and supply a few spares with each unit.
RE: Help in finding a threaded polyethylene bush
Im well aware that rural Africa will not be in a position to provide "off the shelf" items. Part of the project, is at a later date was to move assembly to rural Africa. It's for this reason that the local machine shop solution is not really viable.
Again that you for your help
RE: Help in finding a threaded polyethylene bush
I think you need to look at reality and accept that it is more than likely that you cannot source this in the UK "off the shelf" and therefore impossible in rural Africa.
I have been involved in this type project and know first hand that some items have to be supplied ex UK/ Australia / USA etc.
Or redesign to suit what is available locally.
RE: Help in finding a threaded polyethylene bush
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If we learn from our mistakes I'm getting a great education!
RE: Help in finding a threaded polyethylene bush
Thanks for the suggestion, but hardword wont work, the fixed guide bush is externally threaded into a 3in BSP female pipe.There is no lathe locally to turn the wood.
The fixed guide bush has a 10mm hole to allow the rod to slide up and down.
Remember Im not trying to made the components,locally. Just trying to find cheap components that can bought in the UK and shipped to Africa in kit form and assembled in the bush.
Thank you for your interest