Single-screw pump manufacturing method is relatively simple, so the use of such products relative to other pump equipment has a broader market, so the single-screw pump has a strong market competitiveness. So this special and useful single screw pump in the selection, what do we need to do? Single screw pump selection considerations what? Single screw pump selection considerations 1, the pressure of a single screw pump to determine; 2, single screw pump speed selection; 3, single screw pump bushing rubber material selection; 4, the choice of material combinations; Pump specifications are selected according to the nature of the fluid being transported and the pressure and pressure to determine the pump speed by the viscosity of the fluid and corrosive, as the main parameters to choose, to ensure reliable operation of the pump. Pump design speed for the transmission of water or water similar non-corrosive liquids allow the maximum speed, in actual use due to the nature of the media and life requirements are different, the selection should generally be lower than the design speed. For high viscosity and medium containing particles, the design speed of 1 / 2-1 / 3 or lower is generally used. Low speed is good for pump wear. However, the wear rate of the stator decreases after use. At this time, the speed can be properly increased , To compensate for the decline in traffic is also a policy. Transmission medium temperature should be -10 ℃ ~ 80 ℃ in special cases up to 120 ℃. The use of products can play its greatest functional effect, the product selection is very important, from the above study we can find that for the single-screw pump, in its product selection, not only to consider the various pump conditions, but also Considering the working environment of single screw pump, in short, the selection of single screw pump can not rely on sales staff a few simple introduction. This article is copyrighted industry interconnect (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network (CEO QQ / micro letter: 18,189,528) Editor: Coco (QQ / micro-channel: 97,129,096) starting: http : //beng.liuti.cn/ (Service Hotline:)

OTIS Elevator Spare Parts

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Otis is the world's largest manufacturer and maintainer of people-moving products, including elevators, escalators and moving walkways. Founded more than 160 years ago by the inventor of the safety elevator, Otis offers products and services through its companies in more than 200 countries and territories, and maintains approximately 1.9 million elevators and escalators worldwide. Otis is a unit of United Technologies Corp., a leading provider to the aerospace and building systems industries worldwide


People Nearly 66,000 employees globally with approximately 1,000 branch offices
Revenue $12 billion in 2015
Installed Base

Approximately 2.6 million Otis® elevators and escalators in operation worldwide

Service Base Approximately 1.9 million elevators and escalators serviced by Otis worldwide
Countries Products sold and serviced in more than 200 countries and territories
Manufacturing Major manufacturing facilities on four continents
Engineering and Test Centers

Otis has a network of research and engineering facilities and test towers around the world

Company's two tallest elevator test towers are located in Shibayama, Japan (505 feet or 154 meters above ground; 89 feet or 27 meters below ground) and Bristol, Conn., United States (384 feet or 117 meters above ground)

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CEP Elevator Products ( China ) Co., Ltd. , https://www.zjelevatorcontrolsystem.com