Regulating the flow of liquids in pipe systems is carried out by different types of control valves. In the petroleum and chemical industries the most widely regulating valves straight-through type. However, in many constructions of valves of this type the problem of cavitation is not resolved completely. With the aim of reducing the negative impact of cavitation on the valve body and pipeline the authors have proposed and developed new designs of valves uniflow type organization of the fluid flow in internal cavities which helps to reduce cavitation effects.

Keywords: transportation, fluid valve, regulating, cavitation, flow, valves

In this article shows the known constructions of gravitational continuous devices for mixing of bulk materials and the conditional classification of these devices. There is the problem of obtaining mixtures in cases when the volume-weighted amount of one component of the mixture is significantly greater than the second (with the ratio of their mass fractions of 1:10, and more). Typically, in the production for mixtures with a ratio 1:10 are used mixers centrifugal type, which operate in a periodic mode. The problem could be successfully solved using gravitational devices that operate in a continuous mode. The classification represented according to the design of mixers. The levels conventional classification for these mixers: (a) used or no additional mixing elements ; (b) the nature of their physical - mechanical properties.

Keywords: mixer, mixing, construction, mixture, component, bulk material, execution unit for mixing, tray, bunker, gravitation.

The article provides an overview of the most common types of control valves used for process control in various industries. To accomplish the overall functions and control features in industry the control valves with an S-shaped body structure are used. However, to reduce the flow resistance and the acoustic pressure generated axisymmetric control valves can be used. регулирование, технологический процесс, конструкция, клапан, арматура, классификация, корпус, запорный орган

Keywords: control, workflow, design, valve, classification, body, valve plug