BS EN 13555:2014
$167.15
Flanges and their joints. Gasket parameters and test procedures relevant to the design rules for gasketed circular flange connections
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 38 |
This European Standard specifies the gasket parameters required by EN 1591-1 and provides the test procedures for establishing the values of these parameters.
Gaskets which are wholly based upon elastomers, or based upon elastomers with only the inclusion of particulate fillers or particulate reinforcement, as opposed to gaskets combining elastomers, fillers and fibrous reinforcement, are beyond the scope of this document.
NOTE The testing procedures given might be applicable to gaskets of other shapes and dimensions.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions Table 1 — Tightness classes |
| 10 | 4 Symbols |
| 11 | 5 List of gasket parameters Table 2 — Gasket parameters and test procedures 6 Test equipment 6.1 Design 6.2 Test platens |
| 12 | 6.3 Metal Foils 6.4 Surface finish 6.5 Measurement of gasket thickness 6.6 Loading 6.7 Temperature |
| 13 | 6.8 Leakage measurement 7 Test gaskets 7.1 Number of gaskets 7.2 Procurement and identification of gaskets 7.3 Pre-conditioning of the gaskets 7.4 Dimensions of test gaskets |
| 14 | Table 3 — Test gasket dimensions for Raised Face Flanges 7.5 Measurement of test gaskets as received 7.6 Influence of gasket dimensions |
| 15 | 8 Test procedures 8.1 General Table 4 — Recommended Elevated Temperature 8.2 Testing Strategy 8.3 Reference gasket thickness 8.4 Compression curve |
| 16 | 8.5 Determination of Qsmax 8.5.1 Generation of Qsmax |
| 17 | Table 5 — Surface pressures Figure 1a — Test procedure for the determination of Qsmax and the generation of values of EG |
| 18 | Figure 1b — Determination of Qsmax |
| 19 | Figure 2 — Test Procedure for the determination of Qsmax 8.6 Determination of the values of EG 8.6.1 Generation of EG from the data generated for the Qsmax test |
| 20 | Figure 3 — Loading scheme and thickness recovery curve Figure 4 — Determination of EG in the case of gasket creep |
| 21 | 8.7 Determination of PQR and ΔeGc 8.8 Determination of Qmin(L) and Qsmin(L) 8.8.1 General |
| 22 | Table 6 — The loading and unloading surface pressures to be used at 40 bar in the determination of Qmin(L) and Qsmin(L) |
| 23 | Figure 5 — Leakage rate as a function of gasket stress (for an internal pressure of 40 bar in this case) |
| 24 | Figure 6 — Qsmin(L) as a function of both internal pressure and tightness class 8.8.2 Leakage diagram 8.9 Determination of Qsmin(L) at elevated temperatures 8.10 Determination of axial coefficient of thermal expansion |
| 25 | 8.11 Determination of the coefficient of static friction 9 Report details |
| 26 | Annex A (informative) Generalised test rig schematic Figure A.1 — Generalised test rig schematic |
| 27 | Annex B (informative) Test rig schematic for compression and compression creep tests Figure B.1 — Test rig schematic for compression, compression creep and creep relaxation tests |
| 28 | Annex C (informative) Test rig schematic for ambient temperature leakage measurement Figure C.1 — Test rig schematic for ambient temperature leakage measurement |
| 29 | Annex D (informative) Schematic of leakage rig allowing use of interchangeable face plate Figure D.1 — Schematic of leakage rig allowing use of interchangeable face plate |
| 30 | Annex E (informative) Transferability of measured leakage rates to service conditions |
| 31 | Annex F (informative) The measurement of the sealing parameter Qsmin(L) after long term service simulating exposure to elevated temperature Figure F.1 — The measurement of sealing parameters of heat aged gaskets |
| 33 | Annex G (informative) Determination of the sealing characteristics of strip sealing materials available in coil form |
| 34 | Annex H (informative) Proposed method for the determination of the coefficient of static friction, µG, of gaskets |
| 35 | Figure H.1 — Experimental setup for friction tests |
| 36 | Bibliography |
