ISO 49:1994 pdf download – Malleable cast iron fittings threaded to ISO 7-1

02-26-2022 comment

ISO 49:1994 pdf download – Malleable cast iron fittings threaded to ISO 7-1
1 Scope
This International Standard specifies requirements for the design and performance of malleable cast iron threaded pipe fittings
These fittings are for general purposes for the transmission of fluids and gases up to the limits of pressure and temperature specified in this International Standard. They are intended for the connection of elements threaded in accordance with I S0 7-1, sizes 1/8 to 6.
For use in conditions outside the pressure and temperature limits specified, consult the fitting manufacturer.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 7-1 :I 994, Pipe threads where pressure-tight joints are made on the threads – Part?: Dimensions, tolerances and designation.
ISO 228-1 : 1994, Pipe threads where pressure-tight joints are not made on the threads – Part 7: Dimensions,tolerances and designation.
ISO 28540:-l), Sampling procedures for inspection by attributes – Part O: Introduction to the IS0 2859 attribute sampling system.
ISO 2859-1 : 1989, Sampling procedures for inspection by attributes – Part 7: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection.
ISO 28592:1985, Sampling procedures for inspection by attributes – Part 2: Sampling plans indexed by limiting quality (LO) for isolated lot inspection.
ISO 2859-3: 1991, Sampling procedures for inspection by attributes – Part 3: Skip-lot sampling procedures.
ISO 5922:1981, Malleable cast iron.
ISO 6708:-*), Pipe components – Definition of nominal size (DN).
3.7 rib: Local and axially aligned additional material on the outside or inside of a fitting for assistance in assembly or manufacturing.
3.8 outlet: Internally or externally threaded end of a fitting, which connects with a tube, fitting or other component threaded in accordance with IS0 7-1.
3.9 run: Two principal axially aligned outlets of a tee or cross.
3.10 branch(es): Side outlet(s) of a tee or cross.
3.11 chamfer: Conical portion at the entrance of a thread removed to assist assembly and prevent damage to the start of the thread.
3.12 face-to-face dimension: Distance between the two parallel faces of axially aligned outlets of a fitting.
3.13 face-to-centre dimension: Distance between the face of an outlet and the central axis of an angularly disposed outlet.
3.14 laying length: Average distance from the assembled pipe end to the axis of the fitting, or between the ends of two assembled pipes (see also 7.2).

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