Name: UNI ISO 8434-3 : 2012
Brand: UNI

METALLIC TUBE CONNECTIONS FOR FLUID POWER AND GENERAL USE - PART 3: O-RING FACE SEAL CONNECTORS

Published date

06-07-2012

Publisher

Ente Nazionale Italiano di Unificazione (UNI)

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 Pressure/temperature requirements
6 Designation of connectors
7 Requirements for tubes
8 Across-flats dimensions and tolerances
9 Design
10 Screw threads
11 Manufacture
12 Assembly instruction
13 Procurement information
14 Marking of components
15 Performance and qualification test
16 Identification statement (reference to this part of ISO 8434)
Annex A (normative) - Specification for 1-14 UNS inch screw
        threads - Basic dimensions
Annex B (normative) - Reduction factors for reducing connectors
Annex C (normative) - Formed tube connection for ISO 8434-3
        O-ring face seal connectors
Annex D (informative) - O-ring face seal tube and hose
        connections with metric or inch tubing or swivel
        hose connector
Annex E (informative) - Typical connections with O-ring face
        seal connectors
Annex F (informative) - Assembly instructions for adjustable
        connectors in ISO 6149-1 ports

ISO 8434-3:2005 specifies the general and dimensional requirements for the design and performance of O-Ring face seal connectors made of steel for tube outside diameters or hose inside diameters of 6 mm through 38 mm, inclusive.

Committee	CT 48
DocumentType	Standard
PublisherName	Ente Nazionale Italiano di Unificazione (UNI)
Status	Current

Standards	Relationship
ISO 8434-3:2005	Identical

ISO 68-2:1998	ISO general purpose screw threads — Basic profile — Part 2: Inch screw threads
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 3305:1985	Plain end welded precision steel tubes — Technical conditions for delivery
ISO 8434-2:2007	Metallic tube connections for fluid power and general use — Part 2: 37 degree flared connectors
ISO 5864:1993	ISO inch screw threads Allowances and tolerances
ISO 19879:2010	Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections
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 12151-1:2010	Connections for hydraulic fluid power and general use — Hose fittings — Part 1: Hose fittings with ISO 8434-3 O-ring face seal ends
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 263:1973	ISO inch screw threads General plan and selection for screws, bolts and nuts Diameter range 0,06 to 6 in