At the shop we had what looked like a large hipodermic syringe.It had a hose attached.Fill with fluid put on open bleeder and push.used it a lot on hydraulic clutch setup as they seemed to be a pain to bleed.As fro brakes I gravity bleed then if not great I bleed with 2 people.I always gravity then close bleeders pump and reopen.Worked good and still do it after doing it at the shop for 30 years.Rocky