• BS EN ISO 8434-4:2000

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Metallic tube connections for fluid power and general use 24° cone connectors with O-ring weld-on nipples

    Available format(s):  Hardcopy, PDF

    Superseded date:  28-02-2010

    Language(s):  English

    Published date:  15-11-2000

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    National foreword
    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Definitions
    4 Requirements for materials
    5 Pressure/temperature requirements
    6 Designation of fittings
    7 Requirements for tubes
    8 Across-flats dimensions
    9 Design
    10 Screw threads
    11 Manufacture
    12 Assembly instruction
    13 Procurement information
    14 Marking of components
    15 Identification statement (Reference to this part of
          ISO 8434)
    Annex A (normative) Port and stud end working pressures and
                        combinations of tube outside diameters
                        and port and stud end thread sizes
    Annex ZA (normative) Normative references to International
                         publications with their relevant
                         European publications
    Figure 1 - Cross-section of typical 24 degree cone connector
               with O-ring weld-on nipple
    Figure 2 - Straight fitting
    Figure 3 - Straight stud fitting
    Figure 4 - Tee
    Figure 5 - Elbow
    Figure 6 - Reducing swivel adapter
    Figure 7 - Reducing stud fitting
    Figure 8 - Compression end and weld-on nipple details
    Figure 9 - O-ring
    Figure 10 - S and L series swivel stud straight adapter
                (SWSDS) with stud end per ISO 1179-2 or ISO
                9974-2
    Figure 11 - Swivel stud straight adapter (SWSDS) with stud
                end per ISO 6149-2 (S series) or ISO 6149-3 (L
                series)
    Figure 12 - Swivel elbow (SWE), swivel branch tee (SWBT) and
                swivel run tee (SWRT)
    Figure 13 - Reducing swivel straight adapter (RESWS)
    Figure 14 - Weld-on reducing nipple (WDRE)
    Figure 15 - Components for use with weld-on nipples and
                swivel nut fittings (see ISO 8434-1 for
                dimensions)
    Figure 16 - Components for use with weld-on nipples and
                swivel nut fittings (see ISO 8434-1 for
                dimensions)
    Figure 17 - Components for use with weld-on nipples and
                swivel nut fittings (see ISO 8434-1 for
                dimensions)
    Table 1 - Working pressures for carbon and stainless steel
              24 degree cone connectors with O-ring weld-on
              nipples
    Table 2 - Working pressure for carbon and stainless steel
              weld-on nipples with various tube wall thicknesses
    Table 3 - Pressure derating for fittings made from stainless
              steel and used at temperatures outside the ranges
              given in 5.1 and 5.2
    Table 4 - Dimensions of weld-on nipples
    Table 5 - Dimensions of O-rings
    Table 6 - Dimensions of S and L series swivel stud straight
              adapters with stud ends per ISO 1179 or ISO 9974-2
    Table 7 - Dimensions of swivel stud straight adapters with
              stud ends per ISO 6149-2 (S series) or ISO 6149-3
              (L series)
    Table 8 - Dimensions of swivel elbows, swivel branch tees and
              swivel run tees
    Table 9 - Dimensions of L and S series reducing swivel
              straight adapters
    Table 10 - Dimensions of L and S series weld-on reducing
               nipples
    Table A.1 - Values for fluid power and general use
    Table A.2 - Values for general use only

    Abstract - (Show below) - (Hide below)

    Defines general and dimensional requirements for the design and performance of 24 degree cone connectors with O-ring weld-on nipples to be used with steel and stainless steel tubes having outside diameters from 6mm to 42mm, inclusive. To be used in fluid power and general application requiring elastomeric seals, within pressure and temperature limits as specified.

    General Product Information - (Show below) - (Hide below)

    Committee MCE/18
    Development Note Renumbers and supersedes BS ISO 8434-4. 2000 version incorporates amendment 11038 to BS ISO 8434-4. Supersedes 93/701682 DC. (06/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 1179-1:2013 Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing — Part 1: Threaded ports
    ISO 8434-1:2007 Metallic tube connections for fluid power and general use Part 1: 24 degree cone connectors
    ISO 5598:2008 Fluid power systems and components Vocabulary
    ISO 4759-1:2000 Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts — Product grades A, B and C
    ISO 4397:2011 Fluid power connectors and associated components — Nominal outside diameters of tubes and nominal hose sizes
    ISO 9974-1:1996 Connections for general use and fluid power Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing Part 1: Threaded ports
    ISO 9974-2:1996 Connections for general use and fluid power — Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing — Part 2: Stud ends with elastomeric sealing (type E)
    ISO 3305:1985 Plain end welded precision steel tubes — Technical conditions for delivery
    ISO 6149-3:2006 Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 3: Dimensions, design, test methods and requirements for light-duty (L series) stud ends
    ISO 6149-2:2006 Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 2: Dimensions, design, test methods and requirements for heavy-duty (S series) stud ends
    ISO 6149-1:2006 Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 1: Ports with truncated housing for O-ring seal
    ISO 3304:1985 Plain end seamless precision steel tubes — Technical conditions for delivery
    ISO 9227:2017 Corrosion tests in artificial atmospheres — Salt spray tests
    ISO 261:1998 ISO general purpose metric screw threads General plan
    ISO 3601-3:2005 Fluid power systems O-rings Part 3: Quality acceptance criteria
    ISO 48:2010 Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD)
    ISO 1179-2:2013 Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing — Part 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E)
    ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
    ISO 1127:1992 Stainless steel tubes Dimensions, tolerances and conventional masses per unit length
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