Valves (арматура)

Bellows-type valves (Арматура трубопроводная сильфонная) (valves with bellows sealing) – valves in which bellows is used for providing leaktightness to moving parts (such as stock, piston) with respect to outer media. (NP-068-05)

Bistable valve (Клапан двухпозиционный) – a relief valve, the slide valve of which can be immobile only in the limiting positions. (NP-068-05)

Check valve (lifting valve) (Клапан обратный (клапан подъемный)) – valve, designed for automatic prevention of fluid backflow. (NP-068-05)

Check valves (арматура трубопроводная обратная) – protection valves designed to automatically prevent backflow of fluid. (NP-068-05)

Cutoff valves (арматура трубопроводная отсечная) – protection isolation valves with automatic control. (NP-068-05)

Electromagnetic valves (Арматура трубопроводная электромагнитная) – valve having electromagnet controlled by electric signal as one of the components, inclusively for auxiliary functions (lock, change of actuation pressure, etc.). (NP-068-05)

Fast response pipeline valves (арматура трубопроводная быстродействующая) – safety valves with the actuation time of no more than 10 seconds. (NP-068-05)

Gate valve (Задвижка) – a valve in which regulating or isolating component moves perpendicularly to the axis of fluid flow in the flow pathway. Gate valves are predominantly used as isolating valves, being usually fully open or fully closed. (NP-068-05)

Isolating and regulating pipeline valves (арматура трубопроводная запорно-регулирующая) – regulating valves, capable of being used as isolation valves. (NP-068-05)

Isolating and throttling pipeline valves (арматура трубопроводная запорно-дроссельная) – valves designed for decreasing pressure of fluid, capable of being used as isolation valves. (NP-068-05)

Isolation valves (Арматура запорная) – components (gate valves, taps, etc.) or their combinations (including drainage valves and air vents between them) designed for isolation of systems, components and sections of piping systems (pipelines), including fast response pressure reducing stations. (NP-062-05)

Leaktight valve (Гермоклапан) – leaktight electrically driven isolation valve, with flange connection. (NP-068-05)

Pilot valve (Клапан импульсный) – direct action or controlled relief valve, opening of which leads to opening of the main valve in the pilot-operated relief valve system. (NP-068-05)

Pipeline isolation valves (арматура трубопроводная запорная) - valves designed for blocking fluid flow with the degree of leaktightness determined in accordance with the requirements of applicable regulations, codes and standards. (NP-068-05)

Pipeline valves (арматура трубопроводная) – a class of components installed on pipelines and vessel nozzles and intended for controlling flow (isolation, distribution, regulation, discharge, mixing, phase separation) of fluids (liquids, gases, liquid-gas mixtures, suspensions, etc.) by means of changing flow path cross section. Pipeline valves are classified by the following attributes: purpose, operating conditions (pressure, temperature, type and composition of fluid), nature of interaction of the isolating or regulating component with the fluid, nominal cross-section of the flow path. (NP-068-05)

Pneumatic valve (Пневмоарматура) – a valve operated by pneumatic drive. (NP-068-05)

Proportional valve (Клапан пропорциональный) – relief valve, the slide valve of which can rest in any intermediate position depending on the pressure in the volume it protects. (NP-068-05)

Regulating valve (Клапан регулирующий) – a valve designed for regulating the parameters of fluid by means of changing flow path cross section and controlled with the aid of external source of energy. (NP-068-05)

Regulating valves (арматура трубопроводная регулирующая) – valves designed for changing parameters of fluid by means of changing its flow rate. (NP-068-05)

Relief valves (арматура трубопроводная предохранительная) – protection valves designed for automatic protection of equipment and pipelines against unallowable increase of pressure by means of discharge of the fluid. (NP-068-05)

Tap valve (Кран) – a valve, in which the regulating or closing element has the shape of rotation solid or part of it, rotates around its own axis oriented arbitrarily with respect to fluid flow. (NP-068-05)