society > occupation and work > equipment > machine > parts of machines > control(s) > [adjective] > provided with a valve > relating to type of valve (4)
Something which shuts off: a tap, valve. Also, something used for stopping the operation of anything. Also attributive.
Of a valve or other device: permitting flow or movement in one direction only.
(attributive) Designating a type of safety valve for releasing pressure.
having one or more poppet-valves.