- published: 06 Sep 2014
- views: 2937601
A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically pipe fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure.
The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction.
Valves are used in a variety of contexts, including industrial, military, commercial, residential, and transport. The industries in which the majority of valves are used are oil and gas, power generation, mining, water reticulation, sewage and chemical manufacturing.[citation needed]
In daily life, most noticeable are plumbing valves, such as taps for tap water. Other familiar examples include gas control valves on cookers, small valves fitted to washing machines and dishwashers, safety devices fitted to hot water systems, and valves in car engines. In nature, veins acting as valves are controlling the blood circulation; heart valves control the flow of blood in the chambers of the heart and maintain the correct pumping action.
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I wish to know how fast grows the fear inside us
And let it go, expanding ache my mind will break
Refuse to know that deep inside you grows a monster
Denying your name trying to escape from what you need
Feed my soul with the fire remove this fragments from my
past
Evacuate my mind because it’s starting to collapse
Penetrate with violence the poetry of your dreams
With a stolen word came from the nightmare of your sins
I will try to remove all the ghosts carved inside your
thoughts
I will close all the wounds of my new life
I was crawling praying, searching for the light
I was crawling
Through the night of my mind I will find a light
