Hydraulic fluid power. Filters. Evaluation of differential pressure versus flow

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

19-09-2017

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Operational characteristics
to be tested
6 Filter to be tested
7 Test equipment
8 Measurements
9 Procedure
10 Presentation of results
11 Identification statement (reference to this document)
Annex A (informative) - Introduction to the power loss
equation and method to calculate
Bibliography

Describes a procedure for evaluating differential pressure versus flow characteristics of hydraulic filters and constitutes a basis for agreement between the filter manufacturer and user.

This document specifies a procedure for evaluating differential pressure versus flow characteristics of hydraulic filters and constitutes a basis for agreement between the filter manufacturer and user.

It also specifies a method for measurement of the differential pressure generated at different flow rates and viscosities by the relevant parts of a filter assembly, spin-on and any valves contained within the filter which are in the flow stream. The typical types of filter to be tested are as follows:

Type 1: which are spin-on filters in which the replaceable unit does not include a filter head (it might or might not include the element by-pass valve);

Type 2: which are spin-on filters in which the replaceable element is tested together with a filter head (it might or might not include the element by-pass valve);

Type 3: which are filter assembly, usually of the replacement element type, that is the housing (head and bowl) and element.

Committee	MCE/18/-/6
DevelopmentNote	Supersedes BS 6277(1982). (02/2002) Supersedes 98/716986 DC (02/2003) Supersedes 16/30317112 DC. (10/2017)
DocumentType	Standard
Pages	26
PublisherName	British Standards Institution
Status	Current
Supersedes	98/716986 DC : DRAFT OCT 1998 BS ISO 3968:2001 16/30317112 DC : 0 BS 6277:1982

Standards	Relationship
ISO 3968:2017	Identical

ISO 9110-1:1990	Hydraulic fluid power Measurement techniques Part 1: General measurement principles
ISO 3675:1998	Crude petroleum and liquid petroleum products Laboratory determination of density Hydrometer method
ISO 5598:2008	Fluid power systems and components Vocabulary
ISO 6415:2005	Internal combustion engines — Spin-on filters for lubricating oil — Dimensions
ISO 1219-1:2012	Fluid power systems and components — Graphical symbols and circuit diagrams — Part 1: Graphical symbols for conventional use and data-processing applications
ISO 16889:2008	Hydraulic fluid power Filters Multi-pass method for evaluating filtration performance of a filter element
ISO 2909:2002	Petroleum products Calculation of viscosity index from kinematic viscosity
ISO 9110-2:1990	Hydraulic fluid power Measurement techniques Part 2: Measurement of average steady-state pressure in a closed conduit
ISO 4021:1992	Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of an operating system
ISO 2944:2000	Fluid power systems and components — Nominal pressures
ISO 3448:1992	Industrial liquid lubricants — ISO viscosity classification

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BS ISO 3968:2017

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory

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