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Variable Speed Fire Pump Controllers were invented and released with a UL Listing for fire pump service in 2003 by Master Control Systems, Inc. [1] [2] Paragraph 10.5.5 in the 2003 edition of NFPA-20 recognized Variable Speed as an accepted method for operating the fire pump. Then in the NFPA-20 2007 edition, section 10.10 was added to clarify ...
In 1950, the cleaning technology division was established with the development of the first European hot water high-pressure cleaner, the DS 350. [11] From the mid-1950s to the 1970s, the production of steam generators for industry and construction was a key focus for the company, while cleaning technology only later became Kärcher's main revenue-generating sector.
The pump's cavity is then sealed from the chamber, opened to the atmosphere, and squeezed back to a minute size. [14] [16] More sophisticated systems are used for most industrial applications, but the basic principle of cyclic volume removal is the same: [17] [18] Rotary vane pump, the most common; Diaphragm pump, zero oil contamination
PEV - Plug-in Electric Vehicle - vehicle has a socket and can be propelled by electric power. BEV - Battery Electric Vehicle - vehicle drives on electrical energy stored in a battery. HEV - Hybrid Electric Vehicle - vehicle drives either with or without combustion engine. Does not a have socket for recharging battery.
The gas-lift mandrel is a device installed in the tubing string of a gas-lift well onto which or into which a gas-lift valve is fitted. There are two common types of mandrels. In a conventional gas-lift mandrel, a gas-lift valve is installed as the tubing is placed in the well. Thus, to replace or repair the valve, the tubing string must be pulled.
A paternoster (/ ˌ p eɪ t ər ˈ n ɒ s t ər /, / ˌ p ɑː-/, or / ˌ p æ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping. Passengers can step on or off at any floor they like.
K2 tank fording a shallow river K2 tank with snorkel. The K2 Black Panther is a unique tank equipped with advanced snorkel capabilities, enabling it to navigate challenging battlefields with numerous rivers. It is fully protected from biochemical attacks by a sealed and air circulation system.
The Horki 300EV is a compact electric sedan with the design being essentially a rebadged version of the Kia Cerato R from the Chinese market, it was unveiled on the 2016 Auto Guangzhou. The platform is the same as the first generation Kia Cerato, which is still in production in China as the Cerato R. [ 7 ] [ 8 ]