Gates

Install a Gate (made from a Redstone Chipset) into an item or fluid pipe with right-click. Sneak + empty hand opens it.

mp;1Ifmp;r condition (redstone, pipe has contents, adjacent inventory/tank empty/full, engine hot) mp;1thenmp;r action.

Actions: close the pipe, adjacent engines on or off, cycle an iron pipe's output. "Inverted" turns every condition around – e.g. engines off when the tank is full.

Like BuildCraft 7.1 there is also: mp;1clockmp;r (briefly on every 5, 10 or 15 seconds), mp;1energy pulsarmp;r (the gate itself gives a wooden, emerald or obsidian pipe 1 MJ per 10 ticks – it pulls without any engine), mp;1single pulsemp;r (once per trigger) and mp;1redstone signalmp;r (the pipe emits strength 15 to all neighbours – lamps, pistons, dust).