Businesses in the pumps category supply, install, maintain and repair equipment used to move liquids or, in some cases, gases. They may work with domestic, commercial, industrial and agricultural customers, helping select pumps to suit the fluid, flow rate, pressure, operating conditions and location. Common equipment includes water pumps, submersible pumps, circulation pumps, drainage and sewage pumps, booster sets, dosing pumps and pumps for heating, irrigation or process systems. Services can include assessing requirements, supplying new or replacement pumps, installing pipework and controls, testing systems and diagnosing faults. Maintenance may involve inspection, cleaning, seal or bearing replacement and checking motors, valves and electrical components. Some businesses also provide pump hire, refurbishment, spare parts and emergency breakdown repairs.