gate valves

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• Gate valve — A Gate Valve, or Sluice Valve, as it is sometimes known, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are… …   Wikipedia

• Logic gate — A logic gate is an idealized or physical device implementing a Boolean function, that is, it performs a logical operation on one or more logic inputs and produces a single logic output. Depending on the context, the term may refer to an ideal… …   Wikipedia

• USS West Gate (ID-3216) — was a cargo ship for the United States Navy during World War I. The ship was laid down as SS War Agate , but she was launched in January 1918 as SS West Gate instead.SS West Gate was one of the steam powered West boats that were built for the… …   Wikipedia

• Floodgate — Tokyo floodgates created to protect from typhoon surges Floodgates are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems. They may be designed to set spillway crest heights in dams, to… …   Wikipedia

• Electric actuator — Actuators are used for the automation of industrial valves and can be found in all kinds of technical process plants: they are used in wastewater treatment plants, power plants and even refineries. This is where they play a major part in… …   Wikipedia

• Alllead Copper — Infobox Company company name = Yuhuan Alllead Copper Co.,Ltd company type = Private foundation = 1995 location = Yungang Industrial Zone, Chumen Town, Yuhuan, Zhejiang, China industry = brass ball valves, gate valves, stop valves, check valves,… …   Wikipedia

• Tap (valve) — Spigot and faucet redirect here. For other uses, see Spigot (disambiguation). A valve tap is a noise made by the valves of internal combustion engines; see Poppet valve > Internal combustion engine. Indoor Tap commonly found in the bathroom or …   Wikipedia

• Christmas tree (oil well) — Oil well Christmas tree In petroleum and natural gas extraction, a Christmas tree, or tree , (not wellhead as sometimes incorrectly referred to) is an assembly of valves, spools, and fittings used for an oil well, gas well, water injection well,… …   Wikipedia

• environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium

• Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …   Wikipedia

• Pobeda holding Petrovaradin — Pobeda holding a.d.Petrovaradin Création 1949 Personnages clés Jadranko Protić, Président Forme juridique Société par actions …   Wikipédia en Français