Most air compressors either are reciprocating piston type, rotary vane or rotary screw. Blowers give way to various kinds of reciprocating and rotary pumps. A piston is a component of reciprocating engines. The presence of multiple cylinders in reciprocating compressors reduces suction and discharge pulsations. Triplex plunger pumps use three plungers, which reduces the pulsation of single reciprocating plunger pumps. Rotating equipment is an industry umbrella term that includes gearboxes, reciprocating and centrifugal machinery. "Plunger pumps" are reciprocating positive displacement pumps. Turbine engines burn fuel faster than reciprocating engines do. These consist of a cylinder with a reciprocating plunger. Water injection has been used in both reciprocating and turbine aircraft engines. The feed system is operated by a roller connected to the reciprocating bolt carrier assembly. Common bicycle pumps and foot pumps for inflation use reciprocating action. Wood lathes work with either reciprocating or continuous revolution. Turbines offered more power than reciprocating engines for the same volume of machinery. It excludes turboprop and reciprocating engine powered airliners.