High Pressure Cylinder Valve

high pressure
Involving a high degree of activity and exertion; stressful
A high-pressure area is a region where the atmospheric pressure at the surface of the planet is greater than its surrounding environment. Winds within high-pressure areas flow outward due to the higher density air near their center and friction with land.
(of a salesperson or sales pitch) Employing a high degree of coercion; insistent
Involving or using much physical force
hard-hitting: aggressively and persistently persuasive; "a hard-hitting advertising campaign"; "a high-pressure salesman"
High pressure science and engineering is studying the effects of high pressure on materials and the design and construction of devices, such as a diamond anvil cell, which can create high pressure.

cylinder
A solid geometric figure with straight parallel sides and a circular or oval section
a solid bounded by a cylindrical surface and two parallel planes (the bases)
A piston chamber in a steam or internal combustion engine
a chamber within which piston moves
A solid or hollow body, object, or part with such a shape
a surface generated by rotating a parallel line around a fixed line

valve
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
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
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
control consisting of a mechanical device for controlling the flow of a fluid
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only