BS EN 545:2006 pdf download.Ductile iron pipes, fittings, accessories and their joints for water pipelines —— Requirements and test methods.
4.1.3.1 General
Rubber gasket materials shall comply with the requirements of EN 681-1, type Wk When matenals other than rubber are necessary (e.g for flanged pints). they shall comply with the appropriate European Standard or. where no European Standard exists, the appropriate International Standard.
4.1.3.2 Flanged joints
Flanges shall be constructed In such a way that they can be attached to flanges whose dimensions and tolerances comply with EN 1092-2, This ensures interconnection between all flanged components (pipes, fittings, valves..) of the same PN and DN and adequate oant performance.
Bolts and nuts shall comply as a mlnlmtin with the requirements of EN ISO 4016 and EN ISO 4034, grade 4.6. When applicable, washers shall comply with EN ISO 7091.
Although it does not affect interconnection, the manufacturer shall state in his catalogues whether hIs products are normally delivered with fixed flanges or adjustable flanges.
NOTE Flange gaskets can be one of those glten in EN 1514
4.1.3.3 Flexible joints
Pipes and fittings with flexible joints shall comply with 4.2.2.1 for their spigot external diameter DE and their tolerances. This offers the possitiillty of interconnection between components equipped with different types of flexible joints. In addition, each type of flexible joint shall be designed to fulfil the performance requirements of Clause 5.
NOTE 1 For interconnection with ceflain types of joints operating within a different tolerance range on DE. the manufacturer’s guidance should be followed as to the means of enswwig adequate pint p.eifomianoe at high pressures (e.g. measurement and selection of external diameter).
NOTE 2 For interconnection with existing plpees which can have external diameters not in complianoe wIth 4.2.2.1, the manufacturer’s guidance should be followed as to the appropriate means of interconnection (eg. adaptors).
Rubber gasket materials shall comply with the requirements of EN 681-1, type Wk When matenals other than rubber are necessary (e.g for flanged pints). they shall comply with the appropriate European Standard or. where no European Standard exists, the appropriate International Standard.
4.1.3.2 Flanged joints
Flanges shall be constructed In such a way that they can be attached to flanges whose dimensions and tolerances comply with EN 1092-2, This ensures interconnection between all flanged components (pipes, fittings, valves..) of the same PN and DN and adequate oant performance.
Bolts and nuts shall comply as a mlnlmtin with the requirements of EN ISO 4016 and EN ISO 4034, grade 4.6. When applicable, washers shall comply with EN ISO 7091.
Although it does not affect interconnection, the manufacturer shall state in his catalogues whether hIs products are normally delivered with fixed flanges or adjustable flanges.
NOTE Flange gaskets can be one of those glten in EN 1514
4.1.3.3 Flexible joints
Pipes and fittings with flexible joints shall comply with 4.2.2.1 for their spigot external diameter DE and their tolerances. This offers the possitiillty of interconnection between components equipped with different types of flexible joints. In addition, each type of flexible joint shall be designed to fulfil the performance requirements of Clause 5.
NOTE 1 For interconnection with ceflain types of joints operating within a different tolerance range on DE. the manufacturer’s guidance should be followed as to the means of enswwig adequate pint p.eifomianoe at high pressures (e.g. measurement and selection of external diameter).
NOTE 2 For interconnection with existing plpees which can have external diameters not in complianoe wIth 4.2.2.1, the manufacturer’s guidance should be followed as to the appropriate means of interconnection (eg. adaptors).
