Narrows
Decides who goes first: a holder beyond the narrows gets distillate only once every nearer one is full — and twice as slowly.
kindblockcreative tabFluxiongroupAlchemy
Currents
Strata3
Alloy1What the Loupe reads: 4 in all. The game works them out from its recipes. Wheel of Currents
In the Codex
Entry 
Valves, Narrows, Pumps and the Dipstick — Steer the distillate, decide who comes first, and lift it up.
Device
Device group: Alchemy.
