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    Hydraulics Glossary – N

    A two-way valve that may be opened or closed to block or adjust the flow of hydraulic fluid between, and including, fully on and fully off. The needle valve consists of a sharp conical obstruction that is extended or retracted to block or allow flow. Normally designed so that the flow of fluid must make an non-straight turn inside the valve body which results in a desired loss of pressure across the valve when open which is greater than the loss across a gate valve.

    A unit of force based on the unit of mass, Kg (kilogram), multiplied by the acceleration, m/s2 (meters per second per second) which produces Kgm/s2, called the Newton. 1 N = 1 Kgm/s2 = 0.1225 lbs. (F) — (pounds force).

    Fluid whose viscosity does not change with rate of flow.

    The internal member or portion of a hose fitting.

    An inert gas used to serve as an energy source for accumulators or to be used as a cleaning agent when pure, nonexplosive gases are required.

    A fluid in which shear stress is not proportional to shear rate.

    A hydraulic fluid that contains no petroleum. Non-petroleum based oils are ideal for hydraulic systems that are used near a fire hazard.


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    This is a system generated translation and as such will not be fully accurate. We are not responsible for incorrect or inaccurate translations and will not be held responsible for any damage or issues that may result from using this service.