Vickers Hydraulics Valves

hydraulics
The branch of science and technology concerned with the conveyance of liquids through pipes and channels, esp. as a source of mechanical force or control
Hydraulics is a topic in applied science and engineering dealing with the mechanical properties of liquids. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the engineering uses of fluid properties.
Hydraulic systems, mechanisms, or forces
fluid mechanics: study of the mechanics of fluids
(hydraulic) moved or operated or effected by liquid (water or oil); "hydraulic erosion"; "hydraulic brakes"

vickers
Vickers was a famous name in British engineering that existed through many companies from 1828 until 1999.
MacMillan - Somers - Coulthard - Ridout - Beckwith - Naylor - Morawetz. Woitach piano. 1985. Centrediscs CMC-2185/RCI 613
(Vickers S) The Vickers Class "S" was a 40 mm (1.57 in) cannon used to arm British aircraft for attacking ground targets in the Second World War.

valves
(valve) a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
(valve) device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
(valve) control consisting of a mechanical device for controlling the flow of a fluid
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes