enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Needle valve - Wikipedia

   en.wikipedia.org/wiki/Needle_valve

   Needle valves are usually used in flow-metering applications, especially when a constant, calibrated, low flow rate must be maintained for some time, such as the idle fuel flow in a carburettor. Note that the float valve of a carburettor (controlling the fuel level within the carburettor) is not a needle valve, although it is commonly described ...

3. Flow control valve - Wikipedia

   en.wikipedia.org/wiki/Flow_control_valve

   Control valves can also work with hydraulic actuators (also known as hydraulic pilots). These types of valves are also known as automatic control valves. The hydraulic actuators respond to changes of pressure or flow and will open/close the valve. Automatic control valves do not require an external power source, meaning that the fluid pressure ...

4. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   (Not to be confused with choke valves used in industrial flow control, above.) Clapper valve: a type of check valve used in the Siamese fire appliance to allow only one hose to be connected instead of two (the clapper valve blocks the other side from leaking out) Demand valve, part of a diving regulator; Double beat valve; Double check valve

5. Block and bleed manifold - Wikipedia

   en.wikipedia.org/wiki/Block_and_bleed_manifold

   A Block and bleed manifold is a hydraulic manifold that combines one or more block/isolate valves, usually ball valves, and one or more bleed/vent valves, usually ball or needle valves, into one component for interface with other components (pressure measurement transmitters, gauges, switches, etc.) of a hydraulic system. The purpose of the ...

6. Control valve - Wikipedia

   en.wikipedia.org/wiki/Control_valve

   A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. [1] This enables the direct control of flow rate and the consequential control of process quantities such as pressure , temperature , and liquid level.

7. Steam turbine governing - Wikipedia

   en.wikipedia.org/wiki/Steam_turbine_governing

   The flow rate of steam is monitored and controlled by interposing valves between the boiler and the turbine. [2] Depending upon the particular method adopted for control of steam flow rate, different types of governing methods are being practiced. The principal methods used for governing are described below.