This document specifies product characteristics, assessment methods, compliance criteria of test results and a designation system for press fittings including their elastomeric seals, for connecting with metallic tubes. The fitting ends have a nominal diameter from 6 mm to 108 mm. The press fittings are designed for a service lifetime up to fifty years. This document is applicable to press fittings for joining one or more of the following tubes: – copper tubes to EN 1057; and – stainless steel tubes to EN 10312; with wall thicknesses and tempers as specified by the manufacturer. The fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A. Press fittings are used with tubes with wall thicknesses greater than or equal to the wall thickness given in Annex B, to ensure that tubes can withstand the radial pressing forces involved. This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN\/TS 13388. Adaptor fittings for use with copper tubes may combine press ends with fitting ends defined in the other parts of EN 1254. Press fittings for use with metallic tubes may also have flanged end connections according to EN 1092-3. Press fittings for use with metallic tubes may also have a plated or other decorative surface coating. Fittings can be produced by machining, metal forming, casting, or fabrication. Products covered by this document are intended to be used in: a) liquid applications: – hot or cold or combined hot and cold water, including systems according to EN 806; – closed heating systems according to EN 12828; – cooling systems; – drainage systems; – fire protection systems including sprinkler systems according to EN 12845; – supply systems for points of consumption with liquid fuels according to EN 12514. b) gas applications: – natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775; – compressed air systems.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3 Terms and definitions 4 Product characteristics 4.1 Internal pressure 4.1.1 For liquid applications <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4.1.2 For fuel gas applications 4.1.3 For compressed air applications 4.2 Tightness 4.2.1 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure 4.2.2 Requirements for liquid applications 4.2.3 Requirements for gas applications <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.3 Resistance to high temperature (for heating networks) <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.4 Release of dangerous substances 4.5 Durability 4.5.1 Durability of internal pressure: Resistance to stress corrosion 4.5.2 Durability of tightness 4.5.3 Durability of resistance to high temperature (for heating networks) <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.6 Wall thickness at threaded portions of adaptor fittings 4.7 Dimensions of tail pipe ends for swivel fittings 4.8 Dimensions of gas union connectors 4.9 Threaded end dimensions 4.10 Other adapter ends (not defined in EN 1254\u201120:2021) 4.11 Bore dimensions 4.12 Identity of elastomeric sealing material for liquid applications <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.13 Identity of elastomeric sealing material for gas applications 4.14 Tube abutment 4.15 Alignment of the fitting ends 4.16 Shapes for tightening systems 4.17 Surface condition 4.18 Plated or coated surfaces 5 Testing, assessment and sampling methods 5.1 General 5.1.1 Preparation of fittings for testing <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.1.2 Test temperature 5.1.3 Tolerances 5.2 Internal pressure 5.2.1 Internal hydrostatic pressure test 5.2.2 Internal pneumatic pressure test for fuel gas applications 5.2.3 Internal pneumatic pressure tests for compressed air applications <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.3 Tightness 5.3.1 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure 5.3.2 Tests for liquid applications <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.3.3 Tests for gas applications <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.4 Durability 5.4.1 Durability of internal pressure: Resistance to stress corrosion 5.4.2 Durability of tightness 5.4.3 Durability of resistance to high temperature (for heating networks) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 5.5 Wall thickness at threaded portions of adaptor fittings 5.5.1 Type testing 5.5.2 FPC testing 5.6 Dimensions of tail pipe ends for swivel fittings 5.7 Dimensions of gas union connectors 5.7.1 Type testing 5.7.2 FPC testing 5.8 Threaded end dimensions 5.9 Bore dimensions <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.10 Identity of elastomeric sealing material for liquid applications 5.11 Identity of elastomeric sealing material for gas applications 5.12 Alignment of the fitting ends 6 Evaluation of conformity 6.1 General 6.2 Type testing 6.2.1 General <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6.2.2 Test samples, testing and compliance criteria <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 6.2.3 Test reports 6.3 Factory production control (FPC) 6.3.1 General 6.3.2 Equipment <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6.3.3 Raw materials and components 6.3.4 Product testing and evaluation <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7 Designation 8 Marking, labelling and packaging 8.1 General 8.2 Additional marking <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 8.3 Dezincification resistant copper zinc alloys <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Annex A (normative) Maximum operating temperatures and corresponding maximum operating pressures <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Annex B (normative) Minimum nominal wall thicknesses of copper tube with R220, R250 and R290 temper conforming to EN 1057 suitable for jointing by press fittings <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Copper and copper alloys. Plumbing fittings – Press fittings for use with metallic tubes<\/b><\/p>\n |