Businesses in the hydraulic equipment trade supply components and systems that use pressurised fluid to transmit power. Products commonly include hydraulic pumps, motors, cylinders, valves, power packs, accumulators, filters, hoses, fittings and seals. Equipment may be selected for use in machinery across manufacturing, construction, agriculture, transport and other industrial settings, with specifications depending on factors such as pressure, flow rate, fluid type and operating conditions. Some suppliers also design or assemble hydraulic systems, provide replacement parts and make hoses to suit particular applications. Services can include fault diagnosis, testing, repair and maintenance of components or complete systems, as well as installation and advice on safe operation. Businesses may work with new equipment, existing machinery or bespoke requirements, and can help identify leaks, wear, contamination or performance problems.