valve actuator
11Ball valve — A ball valve (like the butterfly valve and plug valve are one of the family of valves called quarter turn valves ) is a valve that opens by turning a handle attached to a ball inside the valve. The ball has a hole, or port, through the middle so… …
12Variable valve timing — Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. VVT allows the lift or duration or timing (some or all) of the intake or exhaust valves (or both) to be changed while the engine is in operation. Two… …
13Flow control valve — Globe control valve with the pneumatic actuator and smart positioner A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature… …
14Solenoid valve — A solenoid valve is an electromechanical valve for use with liquid or gas. The valve is controlled by an electric current through a solenoid: in the case of a two port valve the flow is switched on or off; in the case of a three port valve, the… …
15Directional control valve — Directional control valves are one of the most fundamental parts in hydraulic machinery. They allow fluid flow into different paths from one or more sources. They usually consist of a piston inside a cylinder which is mechanically or electrically …
16Shafer Valve Company — Infobox Company parent name = Emerson Electric company company type = Public (NYSE: [http://www.nyse.com/about/listed/lcddata.html?ticker=EMR EMR] ) company slogan = Consider it solved. foundation = 1946 location = Mansfield, Ohio, USA key people …
17selector valve — i. A hydraulic flow control valve to direct pressurized fluid into one side of actuator and, at the same time, direct return fluid from the other side of the actuator to the reservoir. ii. When used in relation to fuel systems, it means a switch… …
18Shut down valve — A shut down valve (also referred to as SDV or Emergency shutdown valve, ESV, or ESDV) is an actuated valve installed in a pipeline. It isolates a process unit from an upstream or downstream (gaseous or liquid) inventory upon activation of the… …
19shuttle valve — A type of automatic selector valve installed in a critical portion of a fluid power system. It directs the system pressure in the actuator during normal operations but releases emergency fluid when the emergency system is activated …
20Air freshener — A basic gel fragrance air freshener. Air fresheners are consumer products used in homes or commercial products used in restrooms that typically emit fragrance. There are two broad air freshener categories: continuous action and instant action.… …
