BS EN 12560-5:2001 – Flanges and their joints — Gaskets for Class-designated flanges — Part 5: Metallic ring joint gaskets for use with steel flanges
1 Scope
This European Standard specifies the dimensions and marking of metallic ring-joint gaskets for use in conjunction with specific flange facings (type J) of flanges complying with prEN 1759-1:2000 for Class 150,Class 300, Class 600, Class 900 and Class 1 500 for nominal sizes DN 15 to DN 600, and for Class designation 2 500 up to and including DN 300.
NOTE 1 Dimensions of other types of gaskets for use with flanges complying with prEN 1759-1:2000,
prEN 1759-3:1994 and prEN 1759-4:1997 are given in prEN 12560-1:2000,
prEN 12560-2:2000, prEN 12560-3:2000, prEN 12560-4:2000, prEN 12560-6:2000 and
prEN 12560-7:2000.
NOTE 2 The materials for metallic ring-joint gaskets are outside the scope of this standard, but guidance on typical materials and their hardnesses is given in annex A.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).
prEN 1759-1:2000
Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 1: Steel flanges, NPS 2 to NPS 24
EN ISO 4287
Geometrical product specification (GPS) — Surface texture : Profile method — Terms, definitions and surface texture parameters (ISO 4287:1997)
prEN 1759-3:1994
Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 3 : Copper alloy flanges
prEN 1759-4:1997
Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 4: Aluminium alloy
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply:
3.1
NPS
see prEN 1759-3:1994
3.2
Class
see prEN 1759-3:1994
4 Designations
4.1 Range of Class designations
Gaskets shall be designated as suitable for use with one or more of the following Class designations of flange:
¾ Class 150;
¾ Class 300;
¾ Class 600;
¾ Class 900;
¾ Class 1 500;
¾ Class 2 500.
4.2 Range of gasket sizes
Gasket nominal sizes shall be designated in accordance with Table 1.
4.3 Gasket types
Gasket types, as defined in clause 5 and illustrated in Figure 2, shall be designated as either “oval” or “octagonal”.
4.4 Identification number
Each metallic ring-joint gasket is assigned an identification number, prefixed by “R”, as shown in Table 1.
NOTE The nominal size(s) and Class designation(s) to which each identification number is relevant is given in Table 1.
4.5 Information to be supplied by the purchaser
The following information shall be supplied by the purchaser when ordering gaskets:
a) the number and Part of this European Standard, i.e. EN 1 2560-5;
b) whether a particular cross-sectional shape i.e. oval or octagonal, is required (see clause 5);
c) the identification ring number (see 4.4 and Table 1 );
d) the material (see annex A);
Additional information that should be supplied by the purchaser :
e) the expected operating conditions for which the gasket will be used.
BS EN 12560-5:2001 – Flanges and their joints — Gaskets for Class-designated flanges — Part 5: Metallic ring joint gaskets for use with steel flanges