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Several types of valve connections for propane, butane, and LPG containers exist for transport and storage, sometimes with overlapping usage and applications, and there are major differences in usage between different countries. Even within a single country more than one type can be in use for a specific application.
Fittings allow multiple pipes to be connected to cover longer distances, increase or decrease the size of the pipe or tube, or extend a network by branching, and make possible more complex systems than could be achieved with only individual pipes. Valves are specialized fittings that permit regulating the flow of fluid within a plumbing system.
An expansion tank or expansion vessel is a small tank used to protect closed water heating systems and domestic hot water systems from excessive pressure. The tank is partially filled with air, whose compressibility cushions shock caused by water hammer [ citation needed ] and absorbs excess water pressure caused by thermal expansion .
A KC-135 Stratotanker refuels an F-16 Fighting Falcon using a flying boom. Aerial refueling (), or aerial refuelling (), also referred to as air refueling, in-flight refueling (IFR), air-to-air refueling (AAR), and tanking, is the process of transferring aviation fuel from one aircraft (the tanker) to another (the receiver) while both aircraft are in flight.
The longer the extension tube, the closer the lens can focus. Correspondingly, the amount of light and depth of field will be reduced. [ 3 ] On modern cameras using auto exposure the decrease in exposure is corrected for by the camera, but when not using auto exposure this has to be calculated and taken into account when setting exposure.
The drain consists of a straight metal trocar, which serves as a core and guide for a plastic tube with a curved end that is kept straight while the trocar is inside. At the end of the plastic tube, a small flat plate is present that can be taped or sutured to the skin. The drain then ends in a connector that can be connected with a drainage ...