This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC’s registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726. Hoses and couplings are critical parts of every hydraulic system. They transfer hydraulic fluid from the pump to machine components such as valves, motors, and actuators which use the fluid pressure and flow to create the machine motion and force needed to do work. The importance of selecting or replacing hydraulic hoses and couplings often gets overlooked…until something goes wrong. Hydraulic hoses might look simple but they are carefully engineered multi-component assemblies that include reinforcements, a tube to carry the fluid, and a cover to protect both the reinforcements and tube. The reinforcements, for example, can vary depending on the pressure levels the hose will experience, as these hoses from Gates show. Most hoses have three functional layers—the tube, reinforcements, and the cover—assembled in a flexible “laminate design” or “composite structure.” Being flexible lets the hose move, flex, easily route through bulkheads, dam...