Steering Valve for Forklifts - Valves help to regulate the flow of a fluids like for example fluidized gases or regular gases, liquids, slurries by partially obstructing, opening or even by closing certain passageways. Standard valves are pipe fittings but are discussed as a separate category. In situations where an open valve is concerned, fluid flows in a direction from higher to lower pressure.
Valves are utilized in many applications like transport, commercial, military, industrial and residential businesses. Some of the main industries that depend on valves comprise the sewerage, oil and gas sectors, mining, chemical manufacturing, power generation and water reticulation.
Most valves being used in everyday activities are plumbing valves, that are used in taps for tap water. Several common valves include kinds fitted to washing machines and dishwashers, gas control valves on cookers, valves inside car engines and safety devices fitted to hot water systems. In nature, veins in the human body act as valves and regulate the blood flow. Heart valves also regulate the circulation of blood in the chambers of the heart and maintain the right pumping action.
Valves could be operated in a variety of ways. For instance, they can be worked either by a handle, a pedal or a lever. Valves could be driven by changes in temperature, pressure or flow or they can be automatic. These changes could act upon a piston or a diaphragm which in turn activates the valve. Several common examples of this particular kind of valve are found on safety valves or boilers fitted to hot water systems.
There are more complex control systems utilizing valves that require automatic control which is based on external input. Like for instance, controlling flow through a pipe to a changing set point. These situations generally need an actuator. An actuator would stroke the valve depending on its input and set-up, allowing the valve to be places accurately while allowing control over several needs.
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