noun
control valve; regulating valve
Technical term for a valve that controls flow, pressure, or temperature in mechanical systems.
この装置には高精度の調整弁が使われている。
A high-precision control valve is used in this device.
noun
something that maintains equilibrium or balance
Figurative extension; refers to any person or thing that acts as a stabilizer or balancing factor in a system or situation.
彼はチームの調整弁として、意見の対立をうまくまとめている。
He acts as a balancing factor for the team, skillfully resolving conflicting opinions.