ISO 2944-1974 rus PDF

Full title and description

ISO 2944:1974 — Fluid power systems and components — Nominal pressures (Russian-language entry/version). This is the original 1974 International Standard that defined a standardized series of nominal pressures for hydraulic and pneumatic fluid‑power systems and components. The 1974 edition has been withdrawn and was later superseded by ISO 2944:2000.

Abstract

ISO 2944:1974 established a recommended series of nominal (positive gauge) pressures to be used when specifying fluid‑power systems and components. The intent was to harmonize pressure ratings across standards and product specifications so that manufacturers, designers and standards bodies could select common, interoperable pressure values.

General information

• Status: Withdrawn / Superseded.
• Publication date: July 1974 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.100.01 (Fluid power systems in general).
• Edition / version: Edition 1 (1974).
• Number of pages: 1 (original published document).

Scope

The standard specifies a series of nominal pressures from which values can be chosen for use in other International Standards and product specifications related to fluid power. It applies to positive gauge pressures used with hydraulic and pneumatic systems and components and is intended to provide a common reference series for design, testing and procurement.

Key topics and requirements

• Definition and presentation of a standardized series of nominal pressures for fluid‑power applications.
• Application to positive gauge pressures for hydraulic and pneumatic systems and components.
• Use of the series as a reference when selecting pressure ratings in other ISO standards and technical specifications.
• Facilitation of interoperability and simplification of product ranges by encouraging common nominal pressure values.
• Relationship to later revisions and to complementary fluid‑power terminology and connector standards.

Typical use and users

Engineers and designers of hydraulic and pneumatic systems, manufacturers of components (valves, hoses, fittings, cylinders, pumps), test laboratories, procurement and quality managers, and standards committees. The standard is mainly a reference for selecting nominal pressure ratings in equipment specification, design documentation and normative references within other standards.

Related standards

ISO 2944:2000 (revision / current edition that supersedes the 1974 version); other fluid‑power standards such as ISO vocabulary standards for fluid power (e.g., ISO 5598) and various ISO standards for connectors, hoses and components that reference standardized nominal pressures. National adoptions and regional equivalents may also reference or replace ISO 2944.

Keywords

fluid power, nominal pressure, hydraulic, pneumatic, pressure ratings, ISO 2944, pressure series, standardization, ISO/TC 131

FAQ

Q: What is this standard?

A: ISO 2944:1974 is an International Standard that originally defined a standardized series of nominal pressures for fluid‑power systems and components (hydraulics and pneumatics).

Q: What does it cover?

A: It covers the selection and presentation of nominal (positive gauge) pressure values to be used as reference pressures in other standards and product specifications for fluid‑power equipment.

Q: Who typically uses it?

A: Designers and engineers of hydraulic and pneumatic systems, component manufacturers, test laboratories, procurement specialists and standards committees use it as a reference when specifying or harmonizing pressure ratings.

Q: Is it current or superseded?

A: ISO 2944:1974 has been withdrawn and superseded by a later edition, ISO 2944:2000 (the 2000 edition provides the updated, current series and remains the applicable reference as the revised standard).

Q: Is it part of a series?

A: It is a stand‑alone ISO standard defining nominal pressures, but it is commonly referenced by other fluid‑power standards (vocabulary standards, connector/pipe/hose standards and component specifications) to ensure consistent pressure ratings across related documents.

Q: What are the key keywords?

A: Fluid power, nominal pressures, pressure series, hydraulics, pneumatics, pressure rating, ISO 2944.