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2. Gate valve - Wikipedia

   en.wikipedia.org/wiki/Gate_valve

   At high pressures, friction can become a problem. As the gate is pushed against its guiding rail by the pressure of the medium, it becomes harder to operate the valve. Large gate valves are sometimes fitted with a bypass controlled by a smaller valve to be able to reduce the pressure before operating the gate valve itself. Gate valves without ...

3. Gatehouse (waterworks) - Wikipedia

   en.wikipedia.org/wiki/Gatehouse_(waterworks)

   The Kinzua Dam in Pennsylvania, with outlet works releasing water. A gatehouse, gate house, outlet works or valve house for a dam is a structure housing sluice gates, valves, or pumps (in which case it is more accurately called a pumping station). Many gatehouses are strictly utilitarian, but especially in the nineteenth century, some were very ...

4. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   Used in oil and gas wellheads, where the pressure drop is high. (Not to be confused with engine choke valve, below.) Diaphragm valve or membrane valve, controls flow by movement of a diaphragm. Used in pharmaceutical applications; Gate valve, mainly for on–off control, with low pressure drop; Globe valve, good for regulating flow. Uses a ...

5. Gate (hydraulic engineering) - Wikipedia

   en.wikipedia.org/wiki/Gate_(hydraulic_engineering)

   When using a gate, one thing that is used in certain applications such as manufacturing, mining, and others is the gate valve. Fluids will run through the valve to help lubricate the moving parts of a machine, transmit power, close off openings to moving parts, and to assist evaporating the amount of heat coming through.

6. Floodgate - Wikipedia

   en.wikipedia.org/wiki/Floodgate

   Flow is varied by moving the sleeve away or towards its cone seat. The design allows high pressure water from the base of a dam to be released without causing erosion to the surrounding environment. Fixed cone valves are able to handle heads up to 300 m. Hollow jet valves are a type of needle valve used for floodgate discharge. A cone and seat ...

7. Sleeve valve (water) - Wikipedia

   en.wikipedia.org/wiki/Sleeve_valve_(water)

   Sleeve valves can operate for long periods of time over a high differential pressure across the valve. When a cavitation condition does exist the cavitation takes place surrounded by water. Unlike other valves, air is not necessary to control or suppress the cavitation. Because of this a single sleeve valve can replace several standard valves ...