Thermal Expansion Tanks do have the ability to automatically output from bottom. Right click with wrench on them to change the bottom from input (blue) to output (orange). This is handy because you can use "passive" pipes.
Pretty much any other block that store liquids can't automatically output liquid so you will need "active" pipe that can pull from liquid inventory.
Active - actively pulls from liquid inventory
Transfer node (liquid) - can be upgraded, to extend its range use transfer pipes, can be redstone controlled
Fluid Conduits - can be set to multiple modes (extract, insert, In/Out), use SHIFT to check the tooltip because the have different behavior
Passive - does not actively pull from liquid inventory
Fluid pipes - to make them actively extract liquids, you have to use 
Extraction Pipe + either 
Redstone Engine or 
gate with autarchic pulsar (doesn't apply for TE tanks, you can use 
Golden Fluid Pipe and it will work). Engine is redstone controlled, gates have to be programmed
Fluiduct - to make them actively extract liquids, you have to use servo (doesn't apply for TE tanks), servo has redstone control
		
		
	
	
Left: T - Fluiduct with servo, B - Extraction pipe with Or gate (autarchic pulsar)
Right: T - Ender Fluid Conduit (set to extract > insert), B - Transfer node (liquids)