I found this little pump while looking for pumps to run a miniature firemonitor and bilge pump. I belive its designed to run a blood pressure collar by inflating it and deflating it but it should be ideal for submarine use.
https://www.aliexpress.com/item/1005004035107765.html
https://www.aliexpress.com/item/1005004035107765.html
» Type II U-boat
» WW2 mini sub build
» Not the hobby I expected :)
» Papplewick Pumping Station 2023 - 9th & 10th April
» 915mhz / 868mhz as a viable frequency for submarines.
» Frsky - 915Mhz equipment
» TBS Crossfire - 915Mhz equipment
» ExpressLRS - 915Mhz equipment