IGC - eiga

VALVE OUTLET CONNECTIONS 

FOR GAS CYLINDERS 

IGC DOC 97/03/E 

EUROPEAN INDUSTRIAL GASES ASSOCIATION 

AVENUE DES ARTS 3-5 • B – 1210 BRUSSELS 

Tel : +32 2 217 70 98 • Fax : +32 2 219 85 14 

E-mail : info@eiga.org • Internet : http://www.eiga.org

KEYWORDS 

• CYLINDER 

• CLASSIFICATION 

• VALVE 

IGC DOC 97/03/E 

VALVE OUTLET CONNECTIONS 

FOR GAS CYLINDERS 

Disclaimer 

All technical publications of EIGA or under EIGA's name, including Codes of practice, Safety procedures and any other 

technical information contained in such publications were obtained from sources believed to be reliable and are based on 

technical information and experience currently available from members of EIGA and others at the date of their issuance. 

While EIGA recommends reference to or use of its publications by its members, such reference to or use of EIGA's publications 

by its members or third parties are purely voluntary and not binding. 

Therefore, EIGA or its members make no guarantee of the results and assume no liability or responsibility in connection with 

the reference to or use of information or suggestions contained in EIGA's publications. 

EIGA has no control whatsoever as regards, performance or non performance, misinterpretation, proper or improper use of any 

information or suggestions contained in EIGA's publications by any person or entity (including EIGA members) and EIGA 

expressly disclaims any liability in connection thereto. 

EIGA's publications are subject to periodic review and users are cautioned to obtain the latest edition. 

© EIGA 2003 - EIGA grants permission to reproduce this publication provided the Association is acknowledged as the 

source 

EUROPEAN INDUSTRIAL GASES ASSOCIATION 

Avenue des Arts 3-5 B 1210 Brussels Tel +32 2 217 70 98 Fax +32 2 219 85 14 

E-mail: info@eiga.org Internet: http://www.eiga.org

IGC DOC 97/03 

Table of Contents 

1. Introduction.......................................................................................................................................1 

2. Scope ...............................................................................................................................................1 

3. Part 1: National threaded valve outlets used in 18 European countries ..........................................2 

4. Part 2: New European Valve Outlet Connections (NEVOC) recommendation................................2 

5. References .......................................................................................................................................2 

6. Adapters ...........................................................................................................................................2 

7. Annexes 

Annexes Part 1 

Annex 1 List of connections used………………..………………………………………………………… 4 

Annex 1 A Valve outlets for toxic gases (9 pages)………………………………………………………… 5 

Annex 1 B Valve outlets for flammable gases (3 pages)…..……………………………………...……. .14 

Annex 1 C Valve outlets for oxidising gases (1 page).…………………………………………………. 17 

Annex 1 D Valve outlets for inert gases (1 page)………………………………………………………… 18 

Annex 2 A Different shapes of valve outlets - External diameter……………………………………….. .19 

Annex 2 B Different shapes of valve outlets - Internal diameter………………………………………… .20 

Annex 3 Drawing of connections having the same basic dimensions (classified by country)………....21 

Annex 4 Table of connections having the same basic dimensions (classified by country) (3 pages). 22 


Annex 1 Adapters (example for nitrogen)………………………………………………………..………..25


1. Introduction 

In all European countries, the valve outlet connections for gas cylinders have been developed more or 

less independently from each other. The consequence is that for one gas, different connections are 

being used across Europe. Although the connections used in the respective countries are safe they 

are not compatible with those used in other countries. 

This Document was prepared to facilitate harmonisation of the gas cylinders valve outlets across 

Europe. 

The wish of the Industry is to have the possibility to keep the national valves outlets. The NEVOC 

(New European Valve Outlet Connections) system is intended to be used in case of the need for new 

outlets to facilitate future harmonisation. 

The industry (EIGA Companies) have agreed to commit themselves to use, in case of the need for 

new outlets, the ones corresponding to the NEVOC system. 

For example, if for a 200 bar outlet 2 different groups of gases are used, e.g. same outlet for oxygen 

(oxidising) and nitrogen (asphyxiating) and if this country decides to differentiate oxidising gases from 

asphyxiating gases, the corresponding oxidising and asphyxiated outlet of the NEVOC system should 

be used. Another example concerns new applications such as 300 bar outlets; the corresponding 300 

bar outlet of the NEVOC system shall be used. 

The current national connections systems are listed in part 1 of this document. They can continue to 

be used in the country concerned. The new connections system is based on ISO 5145 and represents 

a «New European Valve Outlet Connections (NEVOC) 

2. Scope 

This document applies to valve outlet connections for gas cylinders. Part 1 lists the outlet connections 

which at present are being used in the CEN members states. 

Part 2 explains how to select a new valve outlet connection from ISO 5145. 

Part 1 

Valve outlet connections for gas cylinders listed in part 1 (national connections) may be used in those 

CEN member states, which are assigned to the respective connections. 

In the event that the current national connections are being replaced by new ones, for whatever 

reasons, then connections according to part 2 of this document should be chosen. 

Part 2 

This describes the valve outlet connections for gas cylinders, which represented a New European 

Outlet Connection (NEVOC) based upon ISO 5145. 

Note 

The following are excluded from this document: 

• Ultra high integrity service valve outlets (see ISO 10692-1). 

• Valve outlets for small medical gas cylinders (< 5 litres) see EN 850 and ISO 407. 

• Valve outlets for LPG cylinders (but included are valve outlets for pure Propane, Butane). 

• Valve outlets for cryogenic gas withdrawal. 

1


3. Part 1: National threaded valve outlets used in 18 European countries 


Annex 1 List of connections used 

Annex 1 A Valve outlets for toxic gases 

Annex 1 B Valve outlets for flammable gases 

Annex 1 C Valve outlets for oxidising gases 

Annex 1 D Valve outlets for inert gases 

Annex 2 A Different shapes of valve outlets - External diameter 

Annex 2 B Different shapes of valve outlets - Internal diameter 

Annex 3 Drawing of connections having the same basic dimensions (classified by country) 

Annex 4 Table of connections having the same basic dimensions (classified by country) 

4. Part 2: New European Valve Outlet Connections (NEVOC) recommendation 

EIGA recommends, that if there is a requirement for a new valve outlet, e.g. due to pressure increase, 

new gas mixture or for a new medical gas mixture, then the valve outlet corresponding to this new 

application shall be selected in accordance with the latest version of ISO 5145 2003. 


Annex 1 Adapters (example for nitrogen) 

5. References 

EN 720-1 Classification of gases and gas mixtures Part 1 – Gas and gas mixtures – Properties of 

gases 

EN 720-2 Classification of gases and gas mixtures Part 2 – Gas and gas mixtures – 

Determination of fire potential and oxidising ability 

ISO 5145 Cylinder valve outlet for gases and gas mixtures – Selection and dimensioning 

EN 850 Transportable gas cylinders – Pin – index, yoke-type valve outlet connections for 

medical use. 

ISO 407 Small medical gas cylinders- Pin – index, yoke-type connections. 

ISO 10692-1 Connections for gas cylinder valves for ultra-high integrity service – Part 1: Outlet 

connections. 

ISO 3166 Code for the representation of names of countries 

6. Adapters 

Due to the fact that it is expected to have two parallel valve outlet connection systems in Europe for a 

long period of time: 

a) National valve outlet standards (Part1) 

b) New European valve outlet connections (Part 2) 

There are two choices to provide interchangeability: 

1) Equipment used connected to the cylinder valve should be changed to the appropriate valve 

outlet connection of the new European valve outlet connection in order to ensure safe operation. 

2


2) Where problems occur to change the equipment together with the valve outlet connection, 

adapters may be used. 

Where the use of adapters is unavoidable, only the adapters shown in this standard (see Part 2, 

annex 1) shall be used and carefully controlled. 

This Document recognises adapters designed to connect a cylinder valve outlet to a regulator, 

charging connection or other mating part having a different connection for the same gas and 

pressure. Adapters are permitted for standard connections between standard (Part 2) and limited 

national standard connections (Part 1) for the same gas, unless the use of such adapters could 

result in undesirable connections. For example,. even for the same gas, adapters must not be 

used which connect a high pressure source to equipment rated at a lower pressure. Other 

adapters may be used by suppliers of gases or related equipment at their facilities. 

An example of what could be one of these safe adapters is given in part 2, annex 1. 

3

IGC 

Part 1 Annex 1 

List of connections used (4 tables) 

This annex gives the connections used for the different groups of gases: 

Codes 

Tables Part 1 Annex 1A For toxic gases 

Table Part 1 Annex 1B For flammable gases 

Table Part 1 Annex 1C For oxidising gases 

Table Part 1 Annex 1D For inert gases 

The following codes, taken from ISO 3166 have been used in table A to F: 

AT Austria GR Greece 

BE Belgium IE Ireland 

CH Switzerland IS Iceland 

DE Germany IT Italy 

DK Denmark LU Luxemburg 

SP Spain NL Netherland 

FI Finland NO Norway 

FR France PT Portugal 

GB United Kingdom SE Sweden 

In the following tables, designations of threads are as follows: 

16.66 Nominal diameter in mm 

1,338 Pitch in mm 

3/8 BSP 

F 19 Type of threads (profile) 

4 

DOC 97/03

IGC Part 1 Annex 1A Valve Outlets for Toxic Gases DOC 97/03 

Gas 

Left Hand 

16.66 20 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 26,16** 28.57 30 

Name Chemical 1.338 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 

(former name) Formula 3/8 BSP 20 W 0.825 0.86 SI 22 GB 5/8 BSP 1 BSW 26 1.03 1.125 30 W 

F 19 14 14 NGO BSW 14 W 14 5/8/16 F 14 8 W 14 14 NGO 14 UNS 14 

Dinitrogentrioxide N 2O3 UK, IE 

(Nitrogen oxide) 

Fluorine F 2 FR, SE, SP, 

IE, PT, UK 

Nitrogen Monoxide NO SP 

(Nitricoxide) 

Nitrogen Dioxide NO 2 or N2O4 

Chlorine Trifluoride ClF 3 SP, PT 

Hydrogen Cyanide HCN SP, PT AT, CH, SE, 

DE, NL, FI 

Chloromethane CH3Cl M) 

IT CH, FI, AT FR, SP, PT UK, IE NL 

(methylchloride) SE, DE, BE, NO 

Cyanogene (CN) 2 

IT P) 

UK, IE FR, SP, PT AT, DE, CH, NL 

Diborane B 2H6 UK, IE UK, IE, FI FR, SP, PT AT, CH, NL 

Coal gas IT M) 

Methanethiol CH 3SH IT M) 

(Methylmercaptan) 

Carbon Monoxide CO IT M) 

Screw thread 

External 

AT, SE NL 

AT, SE, CH FR, SP, PT NL 

NO, DK, IS FR, SP, CH, FI, NO, 

GR, PT NL, AT, DE 

SE 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 5 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Name Chemical 

(former name) Formula 

Dinitrogentrioxide N 2O3 


Fluorine F 2 

Nitrogen Monoxide NO 

(Nitricoxide) 


Chlorine Trifluoride ClF 3 

Hydrogen Cyanide HCN 

Chloromethane CH 3Cl 

(methylchloride) 


Diborane B 2H6 

Coal gas 

Methanethiol CH 3SH 


Carbon Monoxide CO 

Screw thread 

External 

Right hand 

13.16 13.16 16.66 18 21.7 27 20.96 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 26 26.16 26.44 26.44 28.57 

1.337 1.338 1.338 1.5 1.814 2 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 3 1.814 1.814 1.814 1.814 

GB 1/4 BSP 3/8 BSP SI W 14 WITH GB 1/2 BSP 0.86 SI 22 GB 5/8 BSP 1 BSW 26 SI 1.03 GB 3/4 BSP 1.125 

1/4/8 F 19 F 19 1/2/15 F 14 BSW 14 W14 5/8/16 F 14 8 W 14 14 NGO 3/4/20 F 14 14 UNS 

FR SP, PT 

DE 

FI, IE 

UK, IE DE, PT, AT, NL, 

UK, CH, SE 

IT P) 

SP, FI 

UK, IE DE, PT, AT, NL, 

NO, CH, SE 

UK, IE 

UK, IE IT PT, FR, SP, UK, IE 

DE, AT, NO, FI, 

CH, NL, SE 

IK, IE FR, CH, AT, SE, 

NL, DE 

IT 

UK, IE FR 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 6 

SE 

IT (NF) 

FR 

IT P) 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Name Chemical 


Dinitrogentrioxide N 2O3 


Fluorine F 2 

Nitrogen Monoxide NO 

(Nitricoxide) 


Chlorine Trifluoride ClF 3 

Hydrogen Cyanide HCN 

Chloromethane CH 3Cl 

(methylchloride) 


Diborane B 2H6 

Coal gas 

Methanethiol CH 3SH 


Carbon Monoxide CO 

Internal 

Left Hand Right Hand 

22.48 22.91 22.92 9.73 16.66 21.8 26 

1.814 1.814 1.814 0.94 1.411 1.814 1.5 

0.885 G 5/8 BSP 1/8 3/8 SI SI 

14 NGO 5/8/16 F 14 27 NGT 18 NGT 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 7 

UK, IE 

UK, IE 

UK, IE 

GR, 

FR 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Screw thread 

External 

Left Hand 

16.66 20 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 26,16** 28.57 30 

Name Chemical 1.338 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 



Ethylene Oxide C 2H4O UK, IE IT ***M) 

NO, CH, FI, FR, SP, PT UK, IE NL 

SE, DE, BE, AT 

Carbonyl Sulfide COS UK, IE UK, IE FR, SP, PT SE, FI, NL 

Hydrogen Sulfide H 2S UK, IE IT UK, IE BE FR, SP, PT CH, FI, NO, 

GR NL, AT, DE, SE 

Phosphine PH 3 

IT P) 

UK, IE AT, CH, DE, SP, FR, SP, PT NL, SE 

FI, UK 

Hydrogen Selenide SeH 2 UK, IE FI, UK, IE FR, SP, PT CH, AT, NL, 

DE 

Ammonia NH 3 FI IT M) 

Bromo Methane CH 3Br FR UK, IE DE 

(methyl bromide 

Hydrogen Bromide HBr UK, IE DE 

Hydrogen Fluoride HF DE 

Hydrogen Iodide HI UK, IE 

Nitrogen Trifluoride NF 3 UK, IE 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 8 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Name Chemical 


Ethylene Oxide C 2H4O 

Carbonyl Sulfide COS 

Hydrogen Sulfide H 2S 


Hydrogen Selenide SeH 2 

Ammonia NH 3 

Bromo Methane CH 3Br 


Hydrogen Bromide HBr 

Hydrogen Fluoride HF 

Hydrogen Iodide HI 

Nitrogen Trifluoride NF 3 

Screw thread 

External 

Right hand 

13.16 13.16 16.66 18 21.7 27 20.96 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 26 26.16 26.44 26.44 28.57 

1.337 1.338 1.338 1.5 1.814 2 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 3 1.814 1.814 1.814 1.814 



IT UK, IE 

NO, DE, AT, 

NL, FI, IS,CH FR 

SE, UK SP 

IE, DK, BE PT 

IT ***(P) 

SP, PT, FI, CH, 

AT, SE, NL, DE 

IE,PT 

UK, IE GR, FI, CH, FR, 

NL, SP, AT, SE, 

DE, UK, IT M) 

PT 

UK, IE FR, FI, SP, AT, 

SE, NL, CH, BE 

IT M) 

UK, IE PT, FR, SE, SP, 

NL, CH, DE 

IT M) 

UK, IE PT, FR, SE, 

SP, DE, NL 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 9 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Name Chemical 


Ethylene Oxide C 2H4O 

Carbonyl Sulfide COS 

Hydrogen Sulfide H 2S 


Hydrogen Selenide SeH 2 

Ammonia NH 3 

Bromo Methane CH 3Br 


Hydrogen Bromide HBr 

Hydrogen Fluoride HF 

Hydrogen Iodide HI 

Nitrogen Trifluoride NF 3 

Internal 


22.48 22.91 22.92 9.73 16.66 21.8 26 

1.814 1.814 1.814 0.94 1.411 1.814 1.5 

0.885 G 5/8 BSP 1/8 3/8 SI SI 

14 NGO 5/8/16 F 14 27 NGT 18 NGT 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 10 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Screw thread 

External 

Left Hand 

16.66 20 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 26,16** 28.57 30 

Name Chemical 1.338 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 



Ozone O 3 

Boron Tribromide BBr 3 

Chlorine Cl 2 

Phosgene COCl 2 

Cyanogenechloride ClCN 

Hydrogen Chloride HCl UK, IE 

Nitrosylchloride NOCl UK, IE 

Sulfur Dioxide SO 2 

Hexafluorpropene F 3C-CF=CF2 

Silicon Tetrafluoride SiF 4 UK, IE 

Boron Trifluoride BF 3 UK, IE 

(Boron Fluoride) 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 11 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Name Chemical 


Ozone O 3 


Chlorine Cl 2 



Hydrogen Chloride HCl 

Nitrosylchloride NOCl 



Silicon Tetrafluoride SiF 4 

Boron Trifluoride BF 3 


Screw thread 

External 

Right hand 

13.16 13.16 16.66 18 21.7 27 20.96 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 26 26.16 26.44 26.44 28.57 

1.337 1.338 1.338 1.5 1.814 2 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 3 1.814 1.814 1.814 1.814 



IT M) 

FR 

FR 

IT M) 

UK, IE FR, FI, SP, IT, NO, 

NL, BE, CH, AT, 

SE, DK, DE, PT 

FR UK, IE SP,PT, FI, NO, 

DE, DK, NL, CH, 

UK, AT, SE 

UK, IE SP, FI, CH, AT, 

PT, SE, NL, DE 

IT M) 

CH, 

UK, IE FR, FI, SE, NL, 

IT M) , UK, AT,SP, IE, 

IS, PT, DK, DE 

NO, AT, NL 

IT UK, IE BE GR, CH NO, IS, DK, NO, NL 

FR PT AT, SE DE 

SP FI 

IT M) 

DE, CH AT UK, IE 

DE 

FR, FI, SP, AT, 

NL, CH, PT 

FR, IT M) 

SP, NO, AT, NL, 

FI, CH, SE, 

DE, PT 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 12 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden


Gas 

Name Chemical 


Ozone O 3 


Chlorine Cl 2 



Hydrogen Chloride HCl 

Nitrosylchloride NOCl 



Silicon Tetrafluoride SiF 4 

Boron Trifluoride BF 3 


Internal 


22.48 22.91 22.92 9.73 16.66 21.8 26 

1.814 1.814 1.814 0.94 1.411 1.814 1.5 

0.885 G 5/8 BSP 1/8 3/8 SI SI 

14 NGO 5/8/16 F 14 27 NGT 18 NGT 

**SP,PT 26.1 (1.814) 

* SP,PT 21,8 (21.7) 13 

(M) Mandatory 

(P) Prefered 

(NF) Not Forbidden

IGC Part 1 Annex 1B Valve Outlets for Flammable Gases DOC 97/03 

Screw thread 

Gas External Internal 

Left Hand Right hand Left hand Right hand Clamp 

18.92 20 20.96 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 28.57 30 20.96 21.8 22.91 22.92 25.4 26.16 28.57 22.48 22.5 22.91 22.91 22.92 16.66 26.44 

Name Chemical 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.411 1.814 

(former name) Formula 0.745 20 W 1/2 BSP 0.825 0.86 SI 22 GB 5/8 BSP 1 BSW 26 1.125 30 W 0.825 0.86 GB 5/8 BSP 1 BSW 1.03 1.125 0.885 22.5 G W 14 5/8 BSP 3/8 NGT 3/4 BSP 

14 NGO 14 F 14 14 NGO BSW 14 W14 5/8/16 F 14 8 W14 14 UNS 14 14 NGO BSW 14 5/8/16 F 14 8 14 NGO 14 UNS 14 NGO W14 5/8/16 F 14 18 F 14 

Acetylene CH=CH GR, SP, FR(M) UK, IE NO, FI, 

SE, 

PT IT(NF) CH, IS, 

DK 

Deuterium D 2 

Ethane CH 3-CH3 

Ethylene CH 2-CH2 

Hydrogen H 2 

Methane CH 4 

Butane C 4H10 

IT(M) NO, AT, 

DE, CH, 

IT(M) NO, AT, 

DE, CH, 

IT(M) NO, AT, 

DE, CH, 

IT(M) NO, AT, 

DE, CH, 

GR, SP*, 

FR, 

FI, SE PT, NL 

GR, SP*, 

FR, 

FI, SE PT, NL 

GR, SP*, 

FR, 

FI, SE PT, NL 

FI, SE, BE, 

IS, 

DK 

IT(M) NO, AT, 

DE, CH, 

FI, SE, BE, 

IS, 

DK 

IT(M) NO, AT, 

DE, CH, 

Butene-1 CH 3-CH2-CH IT(M) NO, AT, 

DE, CH, 

Butene-2 CH 3-CH=CH-CH3 

Isobutane (CH 3)2CH-CH3 

2-Methylpropene CH 2=C(CH3)2 

GR, SP*, 

FR, 

PT, NL 

GR, SP*, 

FR, 

NL 

NL, SP*, 

PT, 

UK, IE 

NO UK, IE 

FI, SE FR UK, IE 

NL, SP*, 

PT, 

FI FR 

IT(M) NO, AT, NL, SP*, 

DE, CH, PT, 

FI FR UK, IE 

IT(M) NO, AT, 

DE, CH, 

(Isobutylene) FI FR 

Propane CH 3-CH2-CH3 

NL, SP*, 

PT, 


DE, CH, PT, 

FI, SE GR, FR 

*21,8(21,7) 14 

NO, SE 

UK, IE 

UK, IE 

UK, IE 

UK, IE 

UK, IE 

SE,DK 

AT,IT(P),IS 

NO, SE UK, IE NO 

(P) Prefered 

(NF) Not Forbidden 

(M) Mandatory


Screw thread 



18.92 20 20.96 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 28.57 30 20.96 21.8 22.91 22.92 25.4 26.16 28.57 22.48 22.5 22.91 22.91 22.92 16.66 26.44 

Name Chemical 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.411 1.814 



Propene CH 3-CH=CH2 


DE, CH, PT, 

SE FR 

Bromethylene CH2-CHBr IT(M) DE, AT, CH NL, SP*, 

PT, 

(Vinyl bromide) 

FR 

1,3-Butadiene-1,3 H 2C-CH-CH-CH 2 

IT(P) NO, AT, NL, SP*, 

DE, CH, PT, 

FI, SE FR 

Chlorethane CH 3-CH2Cl IT(M) NO, IS, AT, 

FI, 

(Ethyl chloride) SE, DK, BE FR 

Silane SiH 4 

Disilane Si 2H4 

Chlorethylene 

(Vinyl chloride) 

Cyclopropane 

CH 2=CHCl 

H 2 CH2 

CH 2 

Arsine AsH 3 

Germane GeH 4 

DE 

NL, SP*, 

PT, 

IT(P) UK, IE CH, DE, GR, SP*, 

UK, IE, PT, 

FI, SE, AT NL, FR 

IT(P) UK, IE IE, UK NL, SP*, 

PT, 

FR 

IT(M) AT, CH, FI, 

DE, 

SE 

IT(M) AT, CH, FI, 

DE, 

SE 

SP*, FR, 

PT 

SP*, FR, 

PT 

Dimethylamine (CH3)2NH UK, IE AT,SE,CH 

DE 

SP*, FR, 

PT 

Dimethylpropane C 5H12 

UK, IE 

UK, IE 

UK, IE NL 

NO UK, IE 

NL NO UK, IE 

UK, IE FI, IE, SE, SP*, FR, 

CH, UK, IE 

UK PT 

IT(P) AT 

NL 

IT(NF) 

UK, IE FI, IE, SE, SP*, FR, 

NL UK, IE 

UK PT 

IT(P) AT IT(NF) 

IT(P) FI, SE SP*, FR, 

PT 

Dimethylether (CH 3)2O IT(P) AT, SE, 

CH, DE 

NL, SP*, 

FR, 

PT 

*21,8(21,7) 15 

IT(M) 

UK, IE 

UK, IE 

UK, IE 

UK, IE 

(P) Prefered 


(M) Mandatory


Screw thread 



18.92 20 20.96 20.96 21.8 21,8* 22 22.91 22.92 25.4 26 28.57 30 20.96 21.8 22.91 22.92 25.4 26.16 28.57 22.48 22.5 22.91 22.91 22.92 16.66 26.44 

Name Chemical 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 1.814 1.814 1.814 3.175 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.411 1.814 



Ethyl methyl ether C2H5OCH3 (Methyl ethyl ether) 

Methyl vinyl ether CH 3OCH-CH2 

(Vinyl methyl ether) 

Ethylamine C 2H5NH2 

(Monoethylamine) 

IT(P) 

IT(P) AT, SE, 

CH, DE 

UK, IE AT, SE, 

CH, DE 

Propyne 

(Methylacetylene) 

CH3-C=CH SE SP*, NL, 

PT 

3-Methyl (CH3)2CH-CH=CH2 1-butene 

NL, FR UK, IE 

FR UK, IE 

NL, FR IT(M) 

FR UK, IE 

IT(P) AT NL,FR IT(NF) UK, IE 

Methylamine CH3NH2 UK, IE AT, SE, 

CH, DE 

SP*, NL, 

FR, 

(Monomethylamine) PT IT(M) 

Trimethylamine (CH 3)3N UK, IE AT, SE, 

CH, DE 

1-Chloro CH 3CClF2 

1,1-Difluoroethane 

Chlorotrifluor- CClF=CF 2 

ethylene 

1,1-Difluoroethane CH3-CHF 2 

1,1-Difluoroethylene CH 2=CF2 

SP*, NL, 

FR, 

PT 

IT(M) AT, DE, CH SP*, NL, 

FR, 

PT 

IT(P) AT, DE, CH SP*, PT, 

FR 


FR, 

PT 


FR, 

PT 

IT(M) 

UK, IE FI 

UK, IE NL FI IT(NF) 

UK, IE FI 

UK, IE FI 

Fluoromethane CH 3F IT(M) FR UK, IE NL FI 

(Methyl fluoride) 

Fluoroethylene CH 2=CHF IT(M) AT, DE, CH FR UK, IE 

(Vinyl fluoride) 

Tetrafluorethylen CF 2=CF2 

IT(M) NL, FR UK, IE FI 

*21,8(21,7) 16 

FI 

(P) Prefered 


(M) Mandatory

IGC Part 1 Annex 1C Valve Outlets for Oxidising Gases DOC 97/03 

Screw thread 

Gas External Internal External 

Right hand Left hand Right hand Right Hand 

Chemical 13.16 16.66 17.46 20.96 21.8 21,8** 22 22.92 22.94 24 26.44 27 28.806 30 30 30 24.51 22.91 22.91 22.92 23 26 30 30 

Name formula 1.337 1.338 1.27 1.814 1.814 1.814 1.814 1.814 1.814 2 1.814 2 1.814 1.75 1.814 2 1.814 1.814 1.814 1.814 1.814 1.5 2 2 

or GB 3/8 BSP 11/16 0.825 0.86 SI 22 5/8 BSP 0.903 WITH 3/4 BSP WITH SI 30 W WITH 0.965 G SI 5/8 BSP 23 SI Wh Wh 

composition* 1/4/8 F 19 BSW 20 14 NGO BSW 14 W 14 F 14 14 NGO F 14 14 14 NGO 5/8/16 F 14 

NO, AT, 

FI, 

DE, UK, 

CH, 

W 14 

DK, IS, 

Air BE NL FR, SP, IT (M) GR SE, 

PT 

IE 

1) (M) 

IT 

Oxygen O2 NO, FI 

IS, DK, 

AT, DE, FR, 

SE CH 

IS, PT, FI, 

NO, 

Dinitrogen 

Oxide N2O 1) (M) 

IT 

DK, DE 

UK, IE NL FR 

4) , 

SP 

CH, AT 

GR 

4) , 

SE 

O.I.= CH, NL GR, AT SP, PT 

O.I. (Air) FR DE 

(3) (M) 

IT 

Breathable 2) 

O.I.> CH, NL AT FR 

gas O.I. (Air) 

1) (M) 

IT DE 

mixtures CO2 

O.I. (Air) 

1) (M) 

IT DE FR 

CO2>7% CH, NL AT 

O.I. > 

O.I. (Air) 

1) (M) 

IT DE FR 

* O.I. is the oxygen index 1) 21,7x1,814 W 14 3) Breathable air W 30 x 1/14 external/rigth (M) Mandatory 

** 21,8 (21,7) 2) SE: small medical cylinders with clamp 4) Upto 3 Litre also internal right hand 

17 

GR, 

NL, UK, 

SP 

BE, PT, IE

IGC Part 1 Annex 1D Valve Outlets for Inert Gases DOC 97/03 


Right hand Left hand Right hand 

20.96 20.96 21.8 21,8* 22 22.92 24.32 24.51 26 26.16 26.44 26.44 24.51 21.8 22.91 22.92 23 24.51 26.44 

Name Chemical 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 1.814 

formula 1/2 BSP 0.825 0.86 S1 22 5/8 BSP 24.32 0.965 26 1.03 GB 3/4 BSP 0.965 0.86 G 5/8 BSP 23 0.965 3/4 BSP 

F14 14 NGO BSW 14 W 14 F 14 W 14 14 NGO W 14 14 NGO 3/4/20 F14 14 NGO 8 SW 14 5/8/16 F 14 W 14 14 NGO F 14 

Argon Ar BE, DE, CH, GR, PT, SP*, NO, SE, FI, UK, IE IT (3) (M) 

AT FR DK, NL, IS 

Helium He AT, CH, BE, GR, PT, SP*, NO, SE, FI, UK, IE 

(3) (M) 

IT 

DE FR DK, NL, IS 

Krypton Kr NO, CH, AT, GR, PT, SP*, NO, SE, FI, UK, IE 

(3) (M) 

IT 

BE, DE FR DK, NL, IS 

(3) (M) 

Neon Ne NO, CH, AT, GR, PT, SP*, NO, SE, FI, UK, IE IT 

DE, BE FR NL, DK, IS 

Xenon Xe NO, DE, AT, GR, PT, SP*, NO, SE, FI, UK, IE 

(3) (M) 

IT 

CH, BE FR NL, DK, IS 

CarbondioxideC 

Tetrafluormethane 

R 14 

CO 2 

CF 4 

Nitrogen N 2 

Sulfurhexafluoride 

Refrigerant 

gases 1) 

NO 2) ,DE 

IS,DK,FI 

IT (4) (M) IE,UK 

AT, SE 2) , NO, 

FI, DE, DK 2) , IS, GR, PT, SP*, UK, IE 

CH, BE, NL FR 

BE GR, PT, SP*, NO, AT,FI, 

(1) (M) 

IT 

IT 

FR DK, DE, NL, 

SE, IS, CH 

1) , (M) 

SF 6 CH, AT, BE GR, PT, SP*, NO, SE, FI, UK., IE 

DE, NO, NL FR UK, IE, IS 

AT, NL SP*, PT NO, UK, FI, 

DE, IT (M) 

SE, IE, IS 

1) Italy 21,7x1,814 3) W 24,51 x1/14" internal/right 

Germany W 21,8 x 1 /14 LH E 4) Not for medical CO2 

W 21,8 x 1/14 RH E (M)Mandatory 

BSW RH E * SP,PT 21,8 (21,7) 

2) Not for medical use (Sweden) 

18 

UK, IE


Part 1 

Annex 2A 

Different Shapes of Valve Outlets 

External Diameter 

19


Part 1 

Annex 2B 

Different Shapes of Valve Outlets 

Internal Diameter 

20


Part 1 Annex 3 

Drawing of Connections having the same basic dimensions (classified by 

country) 

The simplified basic dimensions (from A to L) are defined as below, and tables 

giving them in Annex 4. These dimensions are authoritative. Final reference shall 

be made to the National Standard 

21

IGC Part 1 Annex 4 Table of Connections having the same basic dimensions (Classified by Country) DOC 97/03 

N° 

110 

Countries 

AUSTRIA 

National standard 

Reference Date 

ONORM M 7390-2 

Connection 

number 

Number Form 

8 1a 

Diam, 

25.4 

THREAD 

Pitch Profil Form 

3.175 W EXT 

R / L 

(1) 

R 

A 

25.4 

B 

11 min 

C D 

10 

MAIN BASIC DIMENSIONS 

E F G H I 

7 7 20 3 5 

J 

16 

K L 

17 

M N 

Oxidant, toxic and corrosive gases 

111 AUSTRIA ONORM M 7390-2 1-2 1a/f 21.8 1.814 W EXT L 21.8 9 min 13 7/12 12 19 6 5 16 16 Flammable and non-toxic gases 

112 AUSTRIA ONORM M 7390-2 9 1a 26.44 1.814 R EXT R 26.44 9 min 14 7 12 20 6 5 16 16 Oxygen - 

113 AUSTRIA ONORM M 7390-2 11 1a 16.66 1.338 R EXT R 16.66 9 min 10 7 9.5 15 5 3 12.5 14 Nitrous oxide - 

114 AUSTRIA ONORM M 7390-2 6 1a 21.8 1.814 W EXT R 21.8 9 min 13 7 12 19 6 5 16 16 Non-flammable, non-toxic and thermally stable gases (except nitroge 

115 AUSTRIA ONORM M 7390-2 10 1a 24.32 1.814 W EXT R 24.32 9 min 14 7 12 20 6 5 16 16 Nitrogen and mixtures with nitroge 

116 AUSTRIA ONORM M 7390-2 7 1a 22.91 1.814 G EXT R 22.91 9 min 13 7 12 20 6 5 16 16 Non-flammable, toxic and corrosive or corrosive by hydrolysis gases 

117 AUSTRIA ONORM M 7390-2 13 2c 22.91 1.814 G INT R 22.92 15 12 19 12 20 4 5 16 115 Air 

119 AUSTRIA ONORM M 7390-2 5 1a 25.4 3.175 W EXT L 25.4 11 min 10 7 7 20 3 5 16 17 Flammable and toxic gases 

120 AUSTRIA ONORM M 7390-2 16 1a 24 2 M EXT L 24 11 min 7 Acetylene for bundles 

121 AUSTRIA ONORM M 7390-2 3 Clamp Clamp Acetylene 

122 AUSTRIA ONORM M 7390-2 14 1a 19 1.5 M EXT L 19 9 min 10 7 9.5 17 5 3 13 14 Gases with unknown characteristic 

072 BELGIUM No standard 22.91 1.814 INT R 22.911 13.5 90 Oxygen - 

073 BELGIUM No standard 25.4 3.175 EXT R 25.4 13 Hydrogen fluoride - Chlorine - 

074 BELGIUM No standard 1a 26.441 1.814 EXT R 26.441 13 12 8 Freon CCl2F2 

075 BELGIUM No standard 1a 21.7 1.814 EXT R 21.7 13 12 8 Nitrous oxide - 

076 BELGIUM No standard 1a 22.91 1.814 EXT R 22.91 13 13 9 Sulphur dioxide - 

077 BELGIUM No standard 1a 20.955 1.814 EXT L 20.955 13 12 8 Hydrogen - 

078 BELGIUM No standard 1a 21.8 1.814 EXT R 21.8 11/13 13 8/9 Inert gases - Ammonia - Carbon dioxide 

079 BELGIUM No standard 1a 21.8 * 1.814 EXT L 21.8 7.5 12.5 8.5 Ethylene oxide 

080 BELGIUM No standard 1a 21.8 * 1.814 EXT L 21.8 13/14 12/14 8/10 Methane - Chloromethane - C2H5Cl - Hydrogen sulfide 

001 DENMARK DS 727-1 12/1956 A 1a 21.8 1.814 W EXT L 21.8 13 mini 13 max 13 7 12 19 4 4 15 4 Ethylchloride - Hydrogen - Carbon monoxide 

002 DENMARK DS 727-2 12/1956 A 1a 21.8 1.814 W EXT R 21.8 13 mini 13 max 13 7 12 19 4 4 15 4 Ammonia - Carbon dioxide - Oxygen 

003 DENMARK DS 727-3 12/1956 A 1a 24.32 1.814 W EXT R 24.32 13 mini 13 max 13 7 12 19 4 15 4 

004 DENMARK DS 727-4 12/1956 A 1a 22.911 1.814 G EXT R 22.911 13 mini 13 max 13 7 12 19 4 15 4 Sulphur dioxide 

005 DENMARK DS 727-5 12/1956 A 1a 16.662 1.337 G EXT R 16.662 13 mini 13 max 11 7 10 14.2 4 17 4 Laughing gas 

006 DENMARK DS 727-6 12/1956 B 1e 25.4 3.175 G EXT R 25.4 13 mini 13 max 20 5 17 Chlorine - Hydrogen chloride - Phosgene 

007 DENMARK DS 727-7 12/1956 C 2c26.441 1.814 G INT R 26.441 13 mini 16 max 18 min 9 19 4 4 Acetylene - 

008 DENMARK DS 727-8 12/1956 C 2c22.911 1.814 G INT R 22.911 12 mini 13.5 max 15 min 12 19 4 4 Air - 

C2H6 - C2H4 - Ethylene oxide - Methane - Chloromethane - C3H6 - Hydrogen - C2H3Cl - 

009 FINLAND SFS 2293 /1968 A1 1a 21.8 * 1.814 EXT L 21.8 11 13 5 

010 FINLAND SFS 2294 /1968 A2 1a 21.8 1.814 EXT R 21.8 11 13 5 Ammonia - Oxygen - Carbon dioxide 

011 FINLAND SFS 2295 /1968 A3 1a 24.32 1.814 W EXT R 24.32 11 14 5 Argon - Helium - Krypton - Neon - Nitrogen - Xenon 

012 FINLAND SFS 2296 /1968 A4 1a 16.662 1.337 G EXT R 16.662 11 10 5 Laughing gas 

013 FINLAND SFS 2297 /1968 A5 1a 22.911 1.814 R EXT R 22.911 11 13 5 Sulphur dioxide - Sulphur hexafluoride - Refrigeran 

014 FINLAND SFS 2298 /1968 B1 1e 25.4 3.175 EXT L 25.4 11 Carbon monoxide - Hydrogen sulfide - Hydrogen cyanide 

BF3 - BrH - Fluorine - HF - COCl2- Chlorine - ClO2 - ClCN - Hcl - Bromomethane - N2O4 

015 FINLAND SFS 2299 B2 1e 25.4 3.175 EXT R 25.4 11 

016 FINLAND SFS 2321 /1968 C1 2c 22.911 1.814 R INT R 22.911 12 16 13 Compressed air - Breathing air - 

017 FINLAND SFS 2322 /1968 C2 2c 26.441 1.814 R INT R 26.441 13 18 10 Acetylene - 

018 FINLAND SFS 2327 11/1968 E1 1a 21.8 * 1.814 EXT L 21.8 9 min 13 7 Butane - Propane - 

039 FRANCE NF E 29-650 09/1988 B 1b/c 30 1.75 SI EXT R 30 14 12 22 2.5 14 20 6.5/7.4 4 16 90 15 7.4 Air 

Ammonia - Argon - Nitrogen - Helium - Krypton - Neon - Xenon - Carbon dioxide - R13 - R12 - R21 - 

040 FRANCE NF E 29-650 09/1988 C 1b/c 21.7 1.814 SI EXT R 21.7 15 15 13 10 12 19 15.5/16 5 16 90 20 16 R114 - R22 - R11 ... 

041 FRANCE NF E 29-650 09/1988 D 1d 24 2 W EXT R 24 16 8 15.4 8 12.6 15.4 8 16 90 22.5 14.3 Breathable gas mixtures with OI = OI ai 

042 

043 

FRANCE 

FRANCE 

NF E 29-650 

NF E 29-650 

09/1988 

09/1988 

E 

F 

1b/c 

2a/b 

21.7 

22.91 

1.814 

1.814 

SI 

SI 

EXT 

INT 

L 

R 

21.7 

22.91 

15 

13 

15 

13 

13 10 

16 

12 

14 

19 

20 

15.5/16 

6.5/7.4 

5 

5 

16 

16 

90 

90 

20 16 

7.4 

Chloromethane - Diborane - Methanethiol - Carbon monoxide - Carbonyl sulfide - Hydrogen sulfide - 

Ph hi H d l id B th H d M th B t Sil 

Oxygen - 

044 FRANCE NF E 29-650 09/1988 G 2a/b 26 1.5 SI INT R 26 13 13 16 14 20 6.5/7.4 5 16 90 7.4 Nitrous oxide - Nitrogen monoxide - 

045 FRANCE NF E 29-650 09/1988 H 2a/b 22.91 1.814 W INT L 22.91 14 16 19 19 19 13 16 60 13 Acetylene - Propyne 

Nitrogen dioxide - Hydrogen cyanide - Chloride trifluoride - Hydrogen bromide - Hydrogen fluoride - 

Nitrogen trifluoride - Ozone - Boron tribromide - Hydrogen chloride - 

046 FRANCE NF E 29-650 09/1988 J 1a 25.4 3.175 W EXT R 25.4 12 14 12 6 11 21 5 5 16 18 

047 FRANCE NF E 29-650 09/1988 L 1d 27 2 W EXT R 27 16 8 18.8 8 13.2 18.8 8 16 90 22.5 14.3 Breathable gas mixtures with OI > OI AIR 

048 FRANCE NF E 29-650 09/1988 M 1d 30 * 2 W EXT R 30 16 8 22.2 8 13.8 22.2 8 16 90 22.5 15.3 Breathable gas mixtures with CO2 < 7 % OI > OI a 

049 FRANCE NF E 29-650 09/1988 N 1d 30 * 2 W EXT R 30 16 8 21.5 8 14.5 21.5 8 16 90 22.5 15.3 Breathable gas mixtures with CO2 > 7 % OI > OI a 

130 GERMANY DIN 477 05/1990 1 1a 21.8 1.814 W EXT L 21.8 9 13 7 12 19 6 5 16 16 Ethane - Ethylamine - Ethylene . 

131 GERMANY DIN 477 05/1990 2 1f21.8 1.814 W EXT L 21.8 9 7 12 7 19 11 4 16 14 Isobutane - n-butane - Propane 

132 GERMANY DIN 477 05/1990 3 Clamp Clamp Acetylene - 

133 GERMANY DIN 477 05/1990 4 1b 16.662 1.337 G EXT L 16.662 10.5 10.5 10 12.5 14.5 6.5 2.5 12 90 13.5 Acetylene - Isobutane - N-butane - Propane , if V >= 1 

Hydrogen cyanide - Cyanogen - Carbon monoxide - Hydrogen sulfide - Dichlorosilane 

134 GERMANY DIN 477 05/1990 5 1a 25.4 3.175 W EXT L 25.4 11 10 7 7 20 3 5 16 17 

Ammonia - Argon - Helium - Carbon dioxide - Krypton - Neon - Xenon - Refrigerants... 

135 GERMANY DIN 477 05/1990 6 1a 21.8 1.814 W EXT R 21.8 9 13 7 12 19 6 5 16 16 

136 GERMANY DIN 477 05/1990 7 1a 22.911 1.814 G EXT R 22.911 9 13 7 12 20 6 5 16 16 Sulphur dioxide - 

137 GERMANY DIN 477 05/1990 8 1a 25.4 3.175 W EXT R 25.4 11 10 7 7 20 3 5 16 17 

138 GERMANY DIN 477 05/1990 9 1a 26.441 1.814 G EXT R 26.441 9 14 7 12 20 6 5 16 16 Oxygen - 

(1) R : Right hand L : Left hand 

22


N° 

139 

Countries 

GERMANY 



DIN 477 05/1990 

Connection 

number 

Number Form 

10 1a 

Diam, 

24.32 

THREAD 


1.814 W EXT 

R / L 

(1) 

R 

A 

24.32 

B 

9 

C D 

14 


E F G H I 

7 12 20 6 5 

J 

16 

K L 

16 

M N 

Nitrogen - 

140 GERMANY DIN 477 05/1990 11 1a 16.662 1.337 G EXT R 16.662 9 10 7 9.5 15 5 3 12.5 14 Nitrous oxide ( cylinder > 3 L ) 

141 GERMANY DIN 477 05/1990 12 2c 26.441 1.814 G INT R 26.441 12 15 12 20 4 5 16 Nitrous oxide ( cylinder


N° 

055 

Countries 

SWEDEN 



SS 2238 10/1989 

Connection 

number 

Number Form 

B1 1e 

Diam, 

25.4 

THREAD 


3.175 W EXT 

R / L 

(1) 

L 

A 

25.4 

B 

11 min 

C D 

8 


E F G H I 

5 

J K L M N 

Carbon monoxide - Hydrogen sulphide - Hydrogen cyanide 

Boron trifluoride - Hydrogen bromide - Nitrogen dioxide - Hydrogen fluoride - Phosgene - Chlorine - 

056 SWEDEN SS 2238 10/1989 B1 1e 25.4 3.175 W EXT R 25.4 11 min 8 5 

CNCl - Hydrogen chloride - Bromomethane 

057 SWEDEN SS 2238 10/1989 B2 1a 26.162 1.814 EXT L 9.5 min 14.3 6 min Fluorine 

058 SWEDEN SS 2238 10/1989 C2 2c 26.44 1.814 G INT R 26.44 13 18 Acetylene - 

059 SWEDEN SS 2238 10/1989 C2 2c 22.911 * 1.814 G INT R 22.911 11 15 Air not medical - 

060 SWEDEN SS 3640 09/1991 2c 22.911 * 1.814 INT R 22.911 15 10 min 19.8 min 12 20 5 16 4 Medical air - 

061 SWEDEN SS 3640 09/1991 1a 21.8 * 1.814 EXT R 21.8 11 min 13 5 min 12 19 5 16 16 6 Medical Oxygen - 

062 SWEDEN SS 3640 09/1991 1a 16.662 * 1.337 G EXT R 16.662 11 min 10 5 min 9.5 15 3 12.5 14 5 Medical Nitrous oxide - 

063 SWEDEN SS 3640 09/1991 1a 24.32 * 1.814 EXT R 24.32 11 min 14 5 min 12 20 5 16 16 6 Medical Helium - Medical Nitrogen - 

064 SWEDEN SS 3640 09/1991 1d 27 1.814 W EXT R 27 16 16 15.3 16 24 22.5 5 16 90 22.5 Medical Carbon dioxide - 

144 SWITZERLAND SN 219505 06/1978 2 1a 26.441 1.814 G EXT R 26.441 9 13 14 7 12 19 4 5 16 16 Oxygen - 

145 SWITZERLAND SN 219505 06/1978 3 1a 21.8 * 1.814 W EXT L 21.8 9 13 13 7 12 19 4 5 16 16 Ethane - Ethylene - Methane - Phosphine - Deuterium 

146 SWITZERLAND SN 219505 06/1978 4 1a 21.8 * 1.814 W EXT L 21.8 8 13 13 8.6 12 19 3 7 16 16 Isobutane - N-butane - Propane ( volume > 2 L 

147 SWITZERLAND SN 219505 06/1978 5 1b 16.662 1.337 G EXT L 16.662 10.5 10.5 13 12.5 14.5 6 2.5 12.5 45 13.5 Isobutane - N-butane - Propane ( volume


Annex Part 2 

25

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