Taps and fittings – a device that is installed on the pipelines, aggregates, containers and designed to control (disable, distribution, management, relief, mixing fazorazdeleniya) the flow of work media (liquid, gas, gas-liquid, powder, suspension, etc.) by changing the orifice area. Pipe and fittings is characterized by two main parameters: the nominal (nominal size) and conventional (nominal) pressure. Valves share the following types: Valves – Valves intended to cut off the flow of the working environment with a certain integrity. Safety valves – fittings designed for automatic protection of equipment and pipelines against unacceptable excess pressure through discharge of excess production environment. Control Valves – Valves intended to control parameters of the working environment by changing the flow rate. Valves – Valves, combining the functions stop and control valves. Feedback fittings – valves, designed to automatically prevent backflow of the working environment. Non-return check valves – reverse fixture, which can be carried out forced closing of valves.
Non-return valves controlled – reverse fixture, which can be carried out forcible opening, closing or restriction of the valve. Distribution and mixing valves – valves designed to distribute the flow of the working environment in certain areas or for mixing flows. Cpusknaya (drainage) tube fittings – valves, designed to clear the operating environment of the tanks (tank), piping systems. Fazorazdelitelnaya fittings – valves, designed to separate working environments that are in different phase states. The trap – hardware, removes condensation and impermeable or partially impermeable to superheated steam. Protective (Breaking) fittings – valves, designed for automatic protection of equipment and pipelines against harmful or unintended process changes the settings or the direction of flow working environment, and to mute the stream. Reduction (butterfly) valves – valves, designed to decrease (reduction) of the working pressure in the system by increasing the hydraulic resistance flow path. Control valves – valves designed to control the inflow of the working environment in the test equipment, instruments.
Device types of valves: Gate valve – the type of reinforcement, which has or locking the control element moves perpendicular to the flow of the medium. Valve (valve) – type of fixture that has a locking or control element is moved parallel to the flow of the medium. Faucet – type valve, which has a locking or regulatory element having the shape of a body of revolution or part thereof, is rotated around its own axis, arbitrarily placed in relation to the direction of flow of the working environment. Disc gate (gate, butterfly valve, water-tight valve, germoklapan) – type valve in which the locking and regulating element has a disk rotating around an axis perpendicular to or below the angle to the direction of flow of the working environment.