0 KIAS for Hyd systems 2 and 3 -- they are backed up by electrically-driven demand pumps.
Nothing in my FHB for 1 and 4 (air-driven demand pumps). The only figure is approx 220 KIAS for airstart with a windmilling engine. If the flaps are up, that's about minimum flaps-up maneuvering speed at light weight, anyhow.