This pump consists of a short ~20mm coiled 26 gauge titanium filament wire supported by 2 copper wires.. These wires are pushed through a 1" silicone stopper.
The semi-conical silicone stopper is fitted tightly into a KF-25 100mm flange and clamped with a sealing ring.
A benchtop power supply is used to generate ~12V 5A of power. A separate transformaer power supply may be used later to supply thicker filaments at higher currents.