CEN/TC 23/SC 2 - Fittings

2010-03-01 EMA: Directives updated following PM (see dataservice, e-mail sent on 2010-03-01).

ISO 11117:2007 specifies the requirements for valve protection caps and guards for gas cylinders.
ISO 11117:2007 defines tests for checking the mechanical strength and physical properties of the valve protection cap or valve guard.
ISO 11117:2007applies to protection devices for valves used on cylinders for liquefied, dissolved or compressed gases. It excludes protection devices for cylinders with a water capacity of 5 l or less and cylinders whereby the protection device is fixed by means of lugs welded or brazed to the cylinder, or is welded or brazed directly to the cylinder. This International Standard does not cover valve protection for breathing apparatus cylinders.
ISO 11117:2007 does not specify all the requirements that may be necessary to enable the valve protection device to be used for lifting the cylinder.

ISO 15996:2005 specifies requirements for residual pressure valves, with or without a non-return function, for gas cylinders and the methods of testing such valves, for type approval.
ISO 15996:2005 is applicable to valves to be fitted to gas cylinders of up to 150 l water capacity, intended to contain compressed, liquefied or dissolved gases.
ISO 15996:2005 does not cover valves for fire extinguishers, cryogenic equipment or liquefied petroleum gas.

This International Standard specifies methods for determining whether or not a gas or gas mixture is flammable in air and whether a gas or gas mixture is more or less oxidizing than air under atmospheric conditions. This International Standard is intended to be used for the classification of gases and gas mixtures including the selection of gas cylinder valve outlets. This International Standard does not cover the safe preparation of these mixtures under pressure and at temperatures other than ambient.

ISO 10156:2010 specifies methods for determining whether or not a gas or gas mixture is flammable in air and whether a gas or gas mixture is more or less oxidizing than air under atmospheric conditions.
It is intended to be used for the classification of gases and gas mixtures including the selection of gas cylinder valve outlets.
It does not cover the safe preparation of these mixtures under pressure and at temperatures other than ambient.

This European Standard specifies requirements for gas cylinder valves to be used with non refillable cylinders designed according to prEN 12205 and the method of testing such valves, for type approval. This Standard is not applicable to valves for breathing equipment, fire extinguishers, cryogenic equipment and liquefied petroleum gas (LPG).

This Euroepan Standard defines the requirements for tests and inspections of gas cylinder valves at time of their manufacture. This standard is applicable to valves to be fitted to gas cylinders, up to 150 l water capacity, intended to convey compressed, liquefied or dissolved gases. This Standard is only applicable to valves operated by a hand wheel or a key. This Standard is not applicable to valves for breathing equipment, fire extinguishers, cryogenic equipment and liquefied petroleum gas (LPG).

Scope of the amendment: In order to avoid unnecessary rejects it is recommended to modify clause 6.2.3 Monolithic masses - cracking, crumbling or cavitation of EN 12863 as presented above.

This standard specifies the characteristics of the threaded type outlet connections for gas cylinder valves for compressed breathable air cylinders, up to a maximum cylinder working pressure of 230 bar and 300 bar. It states the  fundamental requirements for both the connection and its components and includes basic dimensions. Annex A gives the prototype qualification test procedures.

This standard specifies the characteristics of the yoke type outlet connections for gas cylinder valves for compressed breathable air cylinders, up to a maximum cylinder working pressure of 230 bar. It states the fundamental requirements for both the connection and its components and includes basic dimensions.

This standard specifies the characteristics of the adaptors converting the outlet of a threaded type cylinder valve for regulator compressed breathable air into a yoke type outlet. It states the fundamental requirements for both the connection and its components and includes basic dimensions.

This standard is intended as a guide to the selection of a suitable material and is connected with compatibility of non-metallic materials with gases which may be in the cylinders or the cylinder valves. This standard may be helpful for composite and laminated materials. Other aspects such as quality of delivered gas are not considered. Only the influence of the gas in changing the material and mechanical properties is considered (for example chemical reaction or change in physical state).

This standard gives guidance in the selection and evaluation of compatibility between metallic gas cylinder and valve materials, and the gas content. The compatibility data given is related to single component gases. Seamless and welded gas cylinders used to contain compressed, liquefied and dissolved gases, are considered. Aspects such as quality of delivered product are not considered.

This European Standard defines the requirements for examination and full refurbishment to be fulfilled for valves at time of periodic inspection of gas cylinders, bundles, drums and trailers, hereafter designated by the general term "gas cylinders". This standard may also be applied to cylinder valves at any other time, e.g. at change of gas service (see EN 1795).

This standard specifies a test method to determine the autogenous ignition temperature of non metallic materials in pressurized gaseous oxygen. Autogenous ignition temperature is a criterion for ranking materials, and can be used to assist with the choice of materials used in the presence of gaseous oxygen. Annex B of this standard is a comprehensive bibliography of the published material on which this standard is based.

This standard specifies the essential procedures to be followed when connecting cylinder valves to gas cylinders. It applies to all valve and cylinder combinations connected with screw threads detailed in annex A but excludes breathing apparatus, diving gas cylinders and fire extinguishers. It defines routines for inspection and preparation prior to valving for both taper and parallel screw threads. Torque values are given in annex A for steel and aluminium gas cylinders.

This International Standard specifies types, dimensions and principles of use of gauges, to be used in conjunction with the taper thread specified in Part 1. Annex A provides examples of calculations for thread gauge dimensions on the large end diameter. Annex B draws attention to the limitations of the gauging system.

This International Standard specifies definitions, dimensions and tolerances of a taper screw thread of nominal diameter 17,4 mm (designated 17E), for the connection of valves to medical and industrial gas cylinders. This standard does not cover the connection requirements for: - mechanical tightness; - gas tightness; - capability of repeated assembly and dismounting operations. Gauge inspection is covered in Part 2.

This European Standard, specifies definitions, dimensions and tolerances of a taper screw thread of nominal diameter 25.8 mm (Designated 25E), for the connection of valves to medical and industrial gas cylinders. Gauge inspection is covered by EN 629-2. This standard does not cover the connection requirements for: - mechanical strength; - gas tightness; - capability of repeated assembly and dismounting operations.

This European Standard specifies types, dimensions and principles of use of gauges, to be used in conjunction with the taper thread specified in EN 629-1. Annex A provides examples of calculations for thread gauge dimensions on the large end diameter. Annex B draws attention to the limitations of the gauging system specified.

TC - Delete superseding note from TP and Foreword

20060524 - Withdrawal of EN 720-2:1996 cancelled by EN ISO 10156-2:2005/AC:2006

This standard specifies test and calculation methods for the determination of flammability and oxidizing ability of gases and gas mixtures. The first test method determines whether or not a gas is flammable in air. The second test method determines if a gas or gas mixture has a greater or lesser oxidizing ability than that of air. The calculation method uses the characteristics of the pure substances, of which the mixture is composed, to determine the characteristics of the mixture.

EN 962:1996 is being amended to address proposals made by the CEN consultant for alignment with RID/ADR.

EN 962:1996 is being amended to modify requirements for test torques, and to address proposals made by the CEN Consultant for alignment with RID/ADR.

This European Standard specifies the requirements for valve protection caps and guards, intended for use with industrial and medical gas cylinders. It defines tests for checking the mechanical strength and physical properties of the valve protection cap or valve guard. This standard applies to valve protection devices to be fitted to gas cylinders intended for liquefied, dissolved or compressed gases.

EN 849:1996 is being amended to address proposals made by the CEN Consultant for alignment with RID/ADR.

EN 849:1996 is being amended to clarify certain important parameters and aspects of testing cylinder valves in accordance with 5.4.4 of EN 849:1996.

This European Standard specifies requirements for gas cylinder valves and the method of testing such valves, for type approval. This standard is applicable to valves to be fitted to gas cylinders, up to 150 l water capacity, intended to convey compressed, liquefied or dissolved gases. This standard is only applicable to valves operated by a hand wheel or a key. This standard is not applicable to valves for breathing equipment, fire extinguishers, cryogenic equipment or liquefied petroleum gas (LPG).

This European Standard applies to pin-index, yoke-type valve outlet connections for medical use, up to a maximum working pressure of 250 bar at 15 °C. These connections are for use with medical gas cylinders of water capacity below 5 l, for patient care, including therapeutic, diagnostic and prophylactic applications, in hospitals and for emergency treatment. It specifies: - basic dimensions; - requirements for alternative designs of pin-index, yoke-type valve connections; - dimension and positions for the holes and pins for the outlet connections for certain gases and gas mixtures.