ISO 4401:2005 PDF

Name: ISO 4401:2005 — Hydraulic fluid power — Four-port directional control valves — Mounting surfaces
SKU: ISO 4401:2005
Price: 25 EUR
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Hydraulic fluid power — Four-port directional control valves — Mounting surfaces

Название (английский):

ISO 4401:2005

Hydraulic fluid power — Four-port directional control valves — Mounting surfaces

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 16
Дата публикации:: 15 июля 2005 г.
Издание:: ISO IS 4401 edition 3 version 1
ICS:: 23.100.50

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Описание (английский):

ISO 4401:2005 specifies the dimensions and other data relating to surfaces on which four-port hydraulic directional control valves are mounted in order to ensure their interchangeability. It applies to mounting surfaces for four-port hydraulic directional control valves which represent current practice. They are generally applicable to industrial equipment.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 4401:2005 - Hydraulic fluid power: Four‑port directional control valves - Mounting surfaces specifies the dimensions and related data for mounting surfaces used with four‑port hydraulic directional control valves. The standard ensures interchangeability of valves and mounting surfaces commonly used in industrial hydraulic equipment. It covers mounting layouts for a range of maximum port diameters and configurations (with/without pilot or drain ports) and is intended for current industry practice.

Key topics and technical requirements

Scope and purpose

Defines mounting surface geometry and data to enable interchangeable valve-to-subplate/manifold interfaces.

Dimensions and codification

Provides figures and tables for mounting surfaces for port diameters such as 4.5 mm, 7.5 mm, 11.2 mm, 17.5 mm, 25 mm, and 32 mm, including variants with pilot or drain ports.

Tolerances and surface quality

Surface roughness: Ra ≤ 0.8 µm (per ISO 1302 / ISO 4287).
Flatness: 0.01 mm over 100 mm (per ISO 1101).
Locating pin hole tolerance: H12 (ISO 286‑2).
Positional tolerances: locating pin and bolt holes ±0.1 mm; port holes ±0.2 mm.

Fixing and thread guidance

Minimum and recommended thread depths and engagement guidance for cap screws/bolts (figures/tables specify D, 1.5D min depth; recommendation examples included in standard).

Symbols and coding

Port identifiers (A, B, P, T, X, Y), fixing holes (F1–F6), locating pin holes (G1, G2) and reference to valve mounting coding (ISO 5783).

Pressure limitations

Operating pressure limits for subplates and manifold blocks are established by the manufacturer, not specified in the standard.

Identification statement

Template for declaring conformity in documentation: “Mounting surface dimensions conform to ISO 4401:2005, Hydraulic fluid power - Four‑port directional control valves - Mounting surfaces”.

Applications and users

Valve manufacturers designing four‑port directional control valves and assemblies.

OEMs and system integrators designing subplates, manifold blocks, and hydraulic manifolds.

Mechanical and hydraulic design engineers specifying valve-to-manifold interfaces for industrial machinery.

Procurement, maintenance and test teams ensuring component interchangeability and correct spare part fit.

Technical writers and catalog teams using the identification statement to claim conformity.

Related standards

ISO 286‑2 (limits & fits), ISO 1101 (geometrical tolerancing), ISO 1302 / ISO 4287 (surface texture), ISO 5598 (fluid power vocabulary), ISO 5783 (valve mounting surface coding).

Keywords: ISO 4401:2005, hydraulic fluid power, four‑port directional control valves, mounting surfaces, valve interchangeability, subplate, manifold block, port diameter, surface roughness, tolerances.

ISO 4401:2005 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 1302:1992

Technical drawings — Method of indicating surface texture

ISO 4287:1997/Amd 1:2009

Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms, definitions and surface t…

SIST EN ISO 1101:2017

Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, locatio…

ISO 286-2:2010/Cor 1:2013

Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 2: Tables of…

ISO 5783:1981

Hydraulic fluid power — Code for identification of valve mounting surfaces

ISO 5598:1985

Fluid power systems and components — Vocabulary