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basic symbols pressure or return line pilot line two or more functions in one unit flexible hose union closed conneci'ion direction of movement ... relief 1 unloading valve with external hydraulic pilot and internal drain (e.g.3rd...) reducing valve (cc. 3rr...) electrical unloading valve (eg.3rd...) electrical proportional relief valve
Graphical symbols for hydraulics – a selection in accordance with DIN ISO 1219-1 (2019) Pressure valves Pressure relief valve, direct-controlled, adjustable ... Nozzle or orifice Throttle valve Throttle valve, adjustable Throttle check valve, adjusta-ble 2-way directional flow control valve, viscosity dependent
Download our full hydraulics symbols e-book, containing more than 140 of the most common symbols! This PDF ebook covers basic lines and symbols, pumps and motors, cylinders, accumulators and valves. Download Ebook
Composite symbols can be devised for any fluid power component by combining basic symbols. Simplified symbols are shown for commonly used components. 1.2.1.6 This standard provides basic symbols, which differentiate between hydraulic and pneumatic fluid power media.
A valve is a mechanical device that controls the flow of fluid and pressure within a system or process. A valve controls system or process fluid flow and pressure by performing any of the following functions: • Stopping and starting fluid flow • Varying (throttling) the amount of fluid flow • Controlling the direction of fluid flow
non-return valve, coupled/uncoupled Quick-action coupling without non-return valve, coupled/uncoupled Fixed displacement pump Hose assembly, fl exible Crossing, no connection is intended Crossing, connected lines Hydraulic source of energy Fixed displacement motor Fixed displacement motor with: • 2 Direction of fl ow • 2 Direction of rotation
Hydraulic circuits can be comprised of an infinite combination of cylinders, motors, valves, pumps and other equipment connected via hydraulic pipes and tubes. The complexity of these components are difficult to represent fully, so a family of graphic symbols have been developed to represent fluid
