Problems with finding a small "high pressure", "Non plastic"
Problems with finding a small "high pressure", "Non plastic"
(OP)
I am currently involved in a project at DTU (poly tech Uni, Denmark) where i am in dire need for a small(physically) all metal pump, delivering pressures up to 100 Bar with no particular requirements regarding flowrate (very small).
The pump MUST be relatively free of Rubber/plastic componets (with the possible exeption of O-rings, interchangeble with compatible components) as the pumping media is DME (Diemethyl Ether) which WILL "eat" most poly components.
Currently i am in no luck finding commercially availible pumps, albreit this might be caused by me looking in the wrong places
So to my Q! Where could one be so inclined as to find the mentioned pumps? (appropriate search key words, would also be appreciated, as English is not my native language)
Yours Sincerely
Rasmus E Nielsen
The pump MUST be relatively free of Rubber/plastic componets (with the possible exeption of O-rings, interchangeble with compatible components) as the pumping media is DME (Diemethyl Ether) which WILL "eat" most poly components.
Currently i am in no luck finding commercially availible pumps, albreit this might be caused by me looking in the wrong places
So to my Q! Where could one be so inclined as to find the mentioned pumps? (appropriate search key words, would also be appreciated, as English is not my native language)
Yours Sincerely
Rasmus E Nielsen





RE: Problems with finding a small "high pressure", "Non plastic"
Best regards
Scalleke
RE: Problems with finding a small "high pressure", "Non plastic"
But again, thank you..
RE: Problems with finding a small "high pressure", "Non plastic"
RE: Problems with finding a small "high pressure", "Non plastic"
RE: Problems with finding a small "high pressure", "Non plastic"
There are Magentically Coupled hydraulic pumps for low flows...That eliminates much of the need for lubricity and rotary seal materials, and they will develop 100 bar or more.
There are a variety of Diaphragm, Bellows, Piston, peristaltic and similar pumps that don't have seals in the normal sense. All will involve some pulsation in the flow, which can be addressed but may not be entirely practical.
Displacement Solenoids and Fuel Injectors are are both approaches, though they also are inherently pulsating.
RE: Problems with finding a small "high pressure", "Non plastic"
We are currently building our own two stroke diesel engine for entering in the Shell Eco marathon. The sought pump is intended to pressurize the "secondary" fuel system(the circuit just behind the solenoid injector nozzle) and with a relieve valve controled "bypass" return line to the tank.
The flow requirements for the main nozzle is just 200cc/hr so if the pump just superseeds that, we are in the clear.
R
RE: Problems with finding a small "high pressure", "Non plastic"
Take a look at this site. These are about as small as I’ve seen.
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RE: Problems with finding a small "high pressure", "Non plastic"
RE: Problems with finding a small "high pressure", "Non plastic"
I'm also interested in miniature hydraulic pumps. One from hydroleduc is really cool (about 150g weight and about 30mm diameter for the PR20) but I heard is quite pricy (around $2000 ??). Any hint for similar products would be great!