ISO 8434-1 DIN 2353 Metric Hydraulic Fittings chart identification

Views: 443     Author: Site Editor     Publish Time: 2023-01-01      Origin: Site

DIN hydraulic fittings is very popular tube connector in the world, it meet DIN 2353 standards of compression fittings and couplings with cutting ring and nut. ISO 8434-1 improve DIN fittings, specific the dimensions of DIN 24 cone tube connector fittings, caps and plugs with metric thread. So now ISO 8434-1 and ISO 8434-4 standards can instead of all DIN standards hydraulic fittings as follows:

DIN 2353 fittings: Compression fittings and couplings

DIN 3865 hydraulic fittings: compressing fittings nipple 24 degree with o-ring joint

DIN 3853 fittings: Compression couplings - Compression ends for coupling nuts

DIN 3861 fittings: Compression rings (ferrules) for use with compression couplings - Design and type W compression ends (ports)

DIN 3870 nut: Compression couplings - Coupling nuts

DIN 3871 fittings: Compression couplings - Male fittings

DIN 3900 fittings: Compression couplings - Compression couplings with tapered stud end

DIN 3901 fittings: Compression couplings - Male stud compression couplings

DIN 3903 fittings: Compression couplings - Taper stud elbows

DIN 3904 fittings: Compression couplings - Male stud elbows

DIN 3906 fittings: Compression couplings - Taper stud tees (stud branch)

DIN 3907 fittings: Compression couplings - Male stud tees (stud branch)

DIN 3913 fittings: Compression couplings - Taper stud tees (stud run)

DIN 3914 fittings: Compression couplings - Male stud tees (stud run)

DIN 3955 fittings: Compression couplings - Male stud coupling assemblies

DIN 7603 fittings: Washers for compression coupling assemblies and screw plugs

Types of DIN 2353 compressing tube fittings with nut and ferrules as follows:

A: Taper thread types of Metric keg and R BSPT thread, straight, Elbow, Branch Tee and Run Tee.

B: Male stud ends, Type A is sealed by washer DIN 3852-1 and DIN 3852-2 type A; Type B is sealed by compression against face of fittings or coupling body DIN 3852-1 and DIN 3852-2 type B; Type E seal by ring seal DIN 3852-11 type E; Type F sealed by o-ring ISO 6149-2 and ISO 6149-3.

Types of DIN EN ISO 8434-1 metallic tube connections for fluid power 24 degree cone connector as follows:

A: weld-on nipple

B: union connector

C: O-ring and Type E stud sealing

D: bulkhead connector

E: swivel stud adapters

F: plugs and caps


Difference between DIN 2353 and DIN EN ISO 8434-1 as follows:

1. Taper thread(Metric Keg and BSPT R thread) is designed by DIN 2353, but not including in ISO 8434-1 standards.

2. Stud ends designs of straight elbow, run tee and branch tee in DIN 2353, but only the straight design fittings are found in ISO 8434-1 standards.

3. ISO 8434-1 standards cover more types of 24 degree cone connectors such as weld-on nipple, union connectors, bulkhead connector, swivel stud adapters and plugs, but DIN 2353 don’t have.

4. DIN 2353 is the complete of compression fittings design with nuts and cuttings ring, but ISO 8434-1 is only body and components design.

DIN 2353 Metric thread pipe thread

DIN 2353 pipe thread

The main manufacturers of hydraulic din fittings adapters’catalog combine DIN 2353 and DIN EN ISO 8434-1 standards, and make the supplements such as adjustable lock nut types, SAE O-ring boss stud, banjo type fittings, NPT taper thread etc. Fitsch DIN hydraulic fittings can meet you demand.


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