90/531/EEC - Procurement procedures of entities operating in the water, energy, transport and telecommunications sectors

This document specifies the endurance test necessary to confirm the ability of hand-operated plastics
valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of
valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and/or
environments, or excessive fluid velocities and cavitation.
NOTE Concerning the chemical aggression of the materials, a classification table is reported in
ISO/TR 10358[1].
This document includes values of the parameters necessary for the proper performance of the
endurance test, with the reservation that the parameters are different in particular product standards
(see 5.1).

This document specifies the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and/or environments, or excessive fluid velocities and cavitation.
NOTE Concerning the chemical aggression of the materials, a classification table is reported in ISO/TR 10358[1].
This document includes values of the parameters necessary for the proper performance of the endurance test, with the reservation that the parameters are different in particular product standards (see 5.1).

This European Standard gives the definition of PN when applied to components of a pipework system, as specified in those standards which use the PN designation system.
This standard specifies the PN numbers which are used.

This European Standard gives the definition of PN when applied to components of a pipework system, as specified in those standards which use the PN designation system.
This standard specifies the PN numbers which are used.

This part of EN 1092 specifies requirements for circular flanges made from ductile, grey and malleable cast iron for DN 10 to DN 4000 and PN 63. (See 4.1 and 4.2). This standard specifies the types of flanges and their facings, dimension and tolerances, bolt sizes, surface finish of jointing faces, marking testing, quality assurance and materials together with associated pressure/ temperature (p/T) ratings.

Migrated from Progress Sheet (TC Comment) (2000-07-10): ISO 6708 submitted for parallel vote.

This part of EN 1092 specifies requirements for circular flanges made from ductile, grey and malleable cast iron for DN 10 to DN 4000 and PN 63. (See 4.1 and 4.2). This standard specifies the types of flanges and their facings, dimension and tolerances, bolt sizes, surface finish of jointing faces, marking testing, quality assurance and materials together with associated pressure/ temperature (p/T) ratings.

Specifies a test method for the determination of the opening and closing torque of thermoplastic valves. Testing shall be carried out by nominal pressure before and after a conditioning period.

Cancels and replaces the first edition (1980). Gives the definition of DN (nominal size) when applied to components of a pipework system, as specified in those standards which use the DN designation system. Gives a list of preferred DN values.

Specifies a test method for the determination of the opening and closing torque of thermoplastic valves. Testing shall be carried out by nominal pressure before and after a conditioning period.

Specifies a method for testing the fatigue strength and performance of thermoplastic valves incorporated in a valve assembly with its obturator mechanism under pressure. Repeated opening and closing shall be performed for as many cycles and using the torque as specified by the particular product standard.

This European Standard contains requirements for the production and testing of weld joints for the installation and modification of onshore steel pipelines and pipework used in gas supply systems, including in-service pipelines, for all pressure ranges for the carriage of processed, non-toxic and non-corrosive natural gas according to ISO 13686.

This European Standard contains requirements for the production and testing of weld joints for the installation and modification of onshore steel pipelines and pipework used in gas supply systems, including in-service pipelines, for all pressure ranges for the carriage of processed, non-toxic and non-corrosive natural gas according to ISO 13686.

This standard describes the specific functional recommendations for polyethylene (PE) pipelines in addition to the general functional recommendations of prEN 12007-1 for: a) a maximum operating pressure (MOP) up to and including 10 bar; b) an operating temperature between -20°C and +40°C. This European Standard specifies common basic principles for gas supply systems. Users of this European Standard should be aware that more detailed national standards and/or codes of practice can exist in the CEN member countries.

This standard describes the specific functional recommendations for polyethylene (PE) pipelines in addition to the general functional recommendations of prEN 12007-1 for: a) a maximum operating pressure (MOP) up to and including 10 bar; b) an operating temperature between -20°C and +40°C. This European Standard specifies common basic principles for gas supply systems. Users of this European Standard should be aware that more detailed national standards and/or codes of practice can exist in the CEN member countries.

This European Standard specifies a combustion method for determining the carbon content, if any, on the inner surface of copper tubes or copper fittings. This standard applies only to round copper tubes as specified in prEN 1057 or copper fittings as specified in prEN 1254-1 and prEN 1254-5.

This European Standard specifies a combustion method for determining the carbon content, if any, on the inner surface of copper tubes or copper fittings. This standard applies only to round copper tubes as specified in prEN 1057 or copper fittings as specified in prEN 1254-1 and prEN 1254-5.

This European Standard gives the definition of PN when applied to components of a pipework system.

This European Standard gives the definition of PN when applied to components of a pipework system.

Specifies a method for testing the fatigue strength and performance of thermoplastic valves incorporated in a valve assembly with its obturator mechanism under pressure. Repeated opening and closing shall be performed for as many cycles and using the torque as specified by the particular product standard.