Forklift Steering Valve - A valve is a device that controls the flow of a fluid like for instance liquids, slurries, fluidized gases or regular gases, by opening, closing or partially obstructing certain passageways. Valves are generally pipe fittings but are typically 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 for instance commercial, military, industrial, residential and transport industries. Some of the main industries which rely on valves comprise the chemical manufacturing, power generation, water reticulation, sewerage, oil and gas sector and mining.
In every day activities, the most popular valves are plumbing valves as seen as it taps for tap water. Various popular examples comprise small valves fitted to dishwashers and washing machines, gas control valves on cookers, valves in car engines and safety devices fitted to hot water systems. In nature, veins within the human body act as valves and control the blood circulation. Heart valves even control the flow of blood in the chambers of the heart and maintain the proper pumping action.
Valves could be worked in a variety of ways. Like for instance, they could be worked either by a handle, a pedal or a lever. Valves can be driven by changes in pressure, flow or temperature or they can be automatic. These changes could act upon a diaphragm or a piston which in turn activates the valve. Some common examples of this particular type of valve are found on boilers or safety valves fitted to hot water systems.
Valves are used in various complicated control systems that could need an automatic control which is based on external input. Controlling the flow through the pipe to a changing set point is an example. These situations usually need an actuator. An actuator would stroke the valve depending on its set-up and input, allowing the valve to be places precisely while enabling control over different needs.
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