When you pull items out of an item valve, it pulls items in the world next to it, kind of like a hopper. If you push into it, it spits them out, but completely straight unlike droppers.
Pulling from/pushing into a Block Gate's inventory makes it act as a block breaker/placer. Mind you, it right-clicks to place, so you can use it like an autonomous activator for right clicking. If an item cannot be placed, it's spit out like an Item Valve.
				
			Pulling from/pushing into a Block Gate's inventory makes it act as a block breaker/placer. Mind you, it right-clicks to place, so you can use it like an autonomous activator for right clicking. If an item cannot be placed, it's spit out like an Item Valve.
 
				
		

 thanks for the tip!
 thanks for the tip!