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This is a quick reference to the traits of the various components of a piped-fluid network.

Component	Inputs	Outputs	One-way?	Switched?	Compressor?	Max. Power	Primary Function
Pipe (various shapes)	2-6 generic		No	No	No	-	Provide a pathway.
Pipe Valve	2 generic		No	Manual	No	-	Open/close flow manually.
Pipe Digital Valve	2 generic		No	Yes	No	25W	Open/close flow using logic circuits.
Pipe Volume Pump	1	1	Yes	Yes	Yes	800W, varies	Pump fluid at adjustable rate.
Pressure Regulator	1	1	Yes	Yes	Yes	100W	Achieve target pressure at output.
Back Pressure Regulator	1	1	Yes	Yes	Yes	100W	Achieve target pressure at input.
Pipe Gas Mixer	2	1	Yes	Yes	Yes1	100W	Combine two input mixes into one output mix, at an adjustable ratio.
Filtration	1	2	Yes	Yes	Yes	5W	Separate an input mix into a pure output and a "leftover" output.
Electrolyzer	1	1	Yes	Yes	Yes	1,400W	From input H2O, output mixed O2 and Volatiles.
Active Vent	1 pipe, 1 space		Yes, reversable	Yes	Yes	100W	Pump pressure between a space and a pipe.
Passive Vent	1 pipe, 1 space		No	No	No	-	Equalize pressure between a space and a pipe.
Wall Cooler	x	x	1w	switch	comp	100W	function
Air Conditioner	x	x	1w	switch	comp	100W	function
Gas Tank Storage	x	x	1w	switch	comp	100W	function
Tank (Large and Small)	x	x	1w	switch	comp	100W	function
Tank Connector	x	x	1w	switch	comp	100W	function

One-way: Does the component prevent gas from flowing the wrong way, from output to input?

Switched: Does it prevent all gas flow when switched off or unpowered?

Compressor: Will it actively increase pressure in the output and decrease pressure in the input? If no, the component only allows pressure to change toward equilibrium between input and output.

Note 1: While the Pipe Gas Mixer will actively compress from output to input, it will stop when either input is empty, to preserve the mix ratio.