ABNT (Associação Brasileira de Normas Técnicas)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| ABNT 172-1 | 3/8" -18 NGT INT | Toxic | Ammonia |
| ABNT 218-1 | W 21.8 x 1/14" INT | Oxidiser | Air, Oxygen, Oxygen Mix >20% |
| ABNT 218-2 | W 21.8 x 1/14" LH INT | Flammable | Hydrogen, Methane |
| ABNT 225-2 | 0.885" - 14 NGO LH | Flammable | Acetylene, Butane |
| ABNT 245-1 | 0.960" - 14 NGO | Inert | Argon, Helium, Nitrogen |
| ABNT 245-1 | 0.960" - 14 NGO | Inert | Inert gases + Oxygen Mix <20% |
| ABNT 245-2 | 0.960" - 14 NGO LH | Non Flammable | Sulphur Hexafluoride |
| ABNT 262-1 | 1.035" - 14 NGO INT | Toxic | Sulphur Dioxide, Chlorine |
| ABNT 209-1 | 0.830" - 14 NGO INT | Non Flammable | Carbon Dioxide |
| ABNT 209-2 | 0.830" - 14 NGO LH INT (Round Nipple) | Toxic, Flammable | Carbon Monoxide, Phosphine, Silane |
| ABNT 209-4 | 0.830" - 14 NGO LH INT (Flat Nipple) | Toxic | Hydrogen Chloride, Hydrogen Sulphide |
| ABNT 166-1 | G 3/8" A - ISO 228-1 | Oxidiser | Nitrous Oxide |
AFNOR (Association Française de Normalisation)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| NF B | W 30 x 1.75 | Oxidiser | Industrial Air |
| NF C | SI 21.7 x 1.814 | Inert Gases | Argon, Helium, Nitrogen |
| NF E | SI 21.7 x 1.814 LH | Flammable | Hydrogen, Hydrogen Mix >4% |
| NF F | SI 22.94 x 1.814 INT | Oxidiser | Oxygen |
| NF G | SI 26 x 1.5 INT | Oxidiser | Nitrous Oxide |
| NF H | W 22.91 x 1.814 LH INT | Flammable | Acetylene |
| NF J | W 25.4 x 3.175 | Corrosive | Chlorine |
| NF K | W 27 x 2 | Corrosive | Hydrogen Chloride |
| NF L | W 27 x 2 | Oxidiser | Inert gases + Oxygen Mix > 21% |
| NF M | W 30 x 2 | Oxidiser | Inert gases + Oxygen Mix > 21% & CO2 < 7% |
| NF P | W 27 x 2 | Oxidiser or corrosive | Nitric Oxide, Nitrogen Dioxide |
BS 341 (British Standard)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| BS 341 No. 2 | G 5/8" LH | Flammable | Acetylene |
| BS 341 No. 3 | G 5/8" INT | Inert | Air, Argon, Neon, Nitrogen |
| BS 341 No. 3 | G 5/8" INT | Oxidiser | Oxygen |
| BS 341 No. 4 | G 5/8" LH INT | Flammable | Acetylene, Hydrogen |
| BS 341 No. 4 | G 5/8" LH INT | Flammable | Carbon Monoxide, Methane, Natural Gas |
| BS 341 No. 6 | G 5/8" | Toxic | Chlorine, Hydrogen Chloride |
| BS 341 No. 7 | G 5/8" LH | Flammable Refrigerants | Flammable Refrigerants |
| BS 341 No. 8 | W 0.860" x 14 TPI | Non Flammable | Carbon Dioxide |
| BS 341 No. 10 | G 1/2" | Toxic | Ammonia |
| BS 341 No. 12 | G 1/2" | Toxic | Sulphur Dioxide |
| BS 341 No. 13 | W 11/16" - 20 TPI | Oxidiser | Nitrous Oxide |
| BS 341 No. 14 | G 3/8" | Toxic | Hydrogen Cyanide, Nitric Oxide |
| BS 341 No. 15 | G 3/8" LH | Toxic | Carbonyl Sulphide, Hydrogen Sulphide |
CGA (US Compressed Gas Association)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| CGA 110 | 0.3125 - 32 UNEF INT | Small Cylinders | All Gases |
| CGA 170 | 9/16" - 18 UNF INT | Non Corrosive, Small Cylinders |
Argon, Helium |
| CGA 180 | 5/8" - 18 UNF INT | Small Cylinders | All Gases |
| CGA 240 | 3/8" - 18 NPT | Toxic | Ammonia |
| CGA 296 | 0.803" - 14 UNS INT | Oxidising Mixtures | Oxygen Mix > 23% |
| CGA 300 | 0.825" - 14 NGO | Refrigerant | Ethyl Chloride |
| CGA 320 | 0.825" - 14 NGO | Non Flammable | Carbon Dioxide |
| CGA 326 | 0.825" - 14 NGO | Oxidiser | Air |
| CGA 330 | 0.825" - 14 NGO LH | Toxic | Hydrogen Chloride |
| CGA 346 | 0.825" - 14 NGO | Oxidiser | Air |
| CGA 350 | 0.825" - 14 NGO LH | Flammable | Hydrogen, Methane |
| CGA 510 | 0.825" - 14 NGO LH INT | Flammable | Propane |
| CGA 540 | 0.903" - 14 NGO | Oxidiser | Oxygen |
| CGA 580 | 0.965" - 14 NGO INT | Inert | Argon, Nitrogen |
| CGA 590 | 0.965" - 14 NGO LM INT | Oxidiser | Air |
| CGA 330 | 1.030" - 14 NGO | Toxic | Hydrogen Sulphide |
| CGA 679 | 1.030" - 14 NGO LH | High Pressure | Nitrogen |
| CGA 705 | 1.125" - 14 UNS LH | Toxic | Ammonia |
DIN 477 (Deutsche Industrie Norm)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| DIN 477 No. 1 | W 21.8 x 1/14" LH | Flammable | Hydrogen, Propane |
| DIN 477 No. 2 | W 21.8" x 1/14" LH | Flammable | Propane |
| DIN 477 No. 3 | Yoke | Flammable | Acetylene |
| DIN 477 No. 3.1 | M 24 x 2" LH | Flammable | Acetylene |
| DIN 477 No. 5 | W 1" x 1/8" LH | Toxic | Carbon Monoxide |
| DIN 477 No. 6 | W 21.8 x 1/14" | Various | Argon, Helium, Carbon Dioxide |
| DIN 477 No. 7 | G 5/8" | Toxic | Sulphur Dioxide |
| DIN 477 No. 8 | W 1" x 1/8" | Toxic | Boron Trichloride |
| DIN 477 No. 9 | G 3/4" | Oxidiser | Oxygen |
| DIN 477 No. 10 | W 24.32 x 1/14" RH | Inerts | Nitrogen |
| DIN 477 No. 11 | G 3/8" | Oxidiser | Nitrous Oxide (>3 l size) |
| DIN 477 No. 12 | G 3/4" INT | Oxidiser | Nitrous Oxide (<3 l size) |
| DIN 477 No. 13 | G 5/8" INT | Non Flammable | Air |
| DIN 477 No. 14 | M 19 x 1.5 LH | Various | Mixtures |
IRAM 2539 (Instituto Argentino de Racionalización de Materiales)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| IRAM 2539 No. 1 | 3/4" BSP x 1/14" - INT | Flammable | Acetylene |
| IRAM 2539 No. 2 | W 21.8 - 1 1/4 | Various | Oxygen, Sulphur Hexafluoride |
| IRAM 2539 No. 3 | 5/8" BSP - INT | Non Flammable | Argon, Nitrogen |
| IRAM 2539 No. 4 | W 21.8 - 1/4 | Flammable | Ethane, Hydrogen |
| IRAM 2539 No. 5 | 3/8" BSP - INT | Oxidiser | Nitrous Oxide |
ISO 5145 (Provisional standard, previously NEVOC)
Connector type |
Connector description |
Generic gas property |
Example gases & mixtures components |
| ISO 5145 No.1 | W 24 x 2 11,2 - 16,8 RH | Inert | Medical Helium & Xenon |
| ISO 5145 No.2 | W 24 x 2 11,9 - 16,1 RH | Oxidiser | Oxygen |
| ISO 5145 No.4 | W 24 x 2 13,3 - 14,7 RH | Inert | Inert gases & mixes, except He & Xe |
| ISO 5145 No.9 | W 24 x 2 13,3 - 14,7 LH | Flammable | Mixes with a flammable gas, except Hydrogen |
| ISO 5145 No.10 | W 24 x 2 14 - 14 LH | Flammable | Hydrogen |
| ISO 5145 No.11 | W 27 x 2 11,8 - 20,2 RH | Inert | Nitrogen |
| ISO 5145 No.17 | W 27 x 2 16 - 16 RH | Inert | Carbon Dioxide |
| ISO 5145 No.24 | W 27 x 2 16 - 16 LH | Flammable | LPG |
| ISO 5145 No.30 | W 30 x 2 15,9 - 20,1 RH | Inert | Helium, Argon, Nitrogen, inert mixes* |
| ISO 5145 No.32 | W 30 x 2 17,3 - 18,7 RH | Oxidiser | Oxygen* |
| ISO 5145 No.38 | W 30 x 2 15,2 - 20,8 LH | Flammable | Mixes with a flammable gas* |
| ISO 5145 No.41 | W 30 x 2 17,3 - 18,7 LH | Refrigerants | Refrigerant gases** |
* Working pressure above 250 bar in Europe and 182 bar in USA
** Flammable according to ISO 5145, for inert No. 4 can be used when FTSC codes fit with the mixture
ITC EP-6 (Instrucción Técnica Complemetaria - Equipos Presión)
Connector type |
Connector description |
Generic gas property |
Example gases & mixtures components |
| TIPO B | M 30 x 1.75 | Non Flammable | Air |
| TIPO C | W 21.7 x 1/14" | Inert | Argon, Helium, Nitrogen |
| TIPO E | W 21.7 x 1/14" LH | Flammable | Hydrogen, Methane, Propane |
| TIPO F | G 5/8" INT | Oxidiser | Oxygen |
| TIPO G | M 26 x 1.5 INT | Oxidising mixtures | Oxygen Mix > 23% |
| TIPO H | G 5/8" LH INT | Flammable | Acetylene |
| TIPO J | W 1" | Toxic and Corrosive | Hydrogen Chloride, Hydrogen Bromide |
| TIPO M | M 19 x 1.5 LH | Mixtures | Calibration Gas Mixtures |
| TIPO T | W 31.75 x 1/7" 237 | Toxic or Corrosive | Chlorine Drum Tanks |
| TIPO U | G 3/8" | Oxidiser | Nitrous Oxide |
NEN 3268 (Nederlandse Norm)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| LU 0 | M 19 x 1.5 LH | Flammable Mixtures | Flammable Mixtures |
| LU 1 | W 21.8 - 1/14" LH | Flammable | Hydrogen, Methane |
| LU 4 | W 25.4 x 3.175" LH | Toxic | Hydrogen Cyanide |
| RI 2 | G 22.91 x 1.814" RH | Oxidiser | Oxygen |
| RU 1 | W 21.8 - 1/14" | Refigerants | Ammonia, Carbon Dioxide |
| RU 3 | W 24.32 - 1/14" | Inert | Argon, Helium, Nitrogen |
| RU 4 | W 25.4 x 3.175" RH | Toxic | Chlorine, Hydrogen Chloride, Sulphur Dioxide |
| RU 6 | W 28.81 x 1.814" RH | Oxidiser | Air |
UNI (Ente Nazionale Italiano di Unificazione)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| UNI 4405 | W 20 x 1/14" LH | Flammable | Hydrogen |
| UNI 4406 | W 21.7 x 1/14" | Non Flammable / Oxidiser | Carbon Dioxide, Oxygen |
| UNI 4407 | W 30 x 1/14" | Toxic | Ammonia |
| UNI 4408 | W 1" x 1/8" | Toxic | Chlorine |
| UNI 4409 | W 21.7 x 1/14" | Inert | Nitrogen |
| UNI 4410 | W 30 x 1/14" | Non Flammable | Air |
| UNI 4411 | W 22.9 x 1/14" | Flammable | Acetylene |
| UNI 4412 | W 24.5 x 1/14" | Inert | Argon, Helium |
| UNI 9097 | G 3/8" EXT | Oxidiser | Nitrous Oxide |
AS 2473.2 (Australian Standard)
Connector type |
Connector description |
Generic gas property |
Example gases or mixtures components |
| Type 10 | G 5/8" RH INT | Non Flammable | Argon, Helium, Oxygen =< 20,000 kPa |
| Type 11 | G 5/8" RH INT Extended nipple |
Oxidiser | Oxygen >20,000 kPa, =< 25,000 kPa |
| Type 20 | G 5/8" LH INT | Flammable | Acetylene, Hydrogen, Ethylene, Methane |
| Type 21 | 0.885" - 14 NGO LH INT | Flammable | LPG, Propane |
| Type 30 | 0.860" - 14 BSW RH EXT | Non Flammable / Oxidiser | Carbon Dioxide, Nitrous Oxide |
| Type 31 | G 5/8" | Chemical Gases | Sulphur Hexafluoride, Phosgene, Methyl Bromide |
| Type 32 | G 1/2" | Toxic | Ammonia, Sulphur Dioxide |
| Type 33 | G 1/4" | Non Toxic, Non Flammable Mixtures | Small cyls <4.5l water capacity |
| Type 34 | G 3/4" | Refrigerants | R134a |
| Type 40 | G 5/8" LH EXT | Toxic | Ethylene Oxide |
| Type 41 | G 3/8" BSP LH EXT | Flammable | LPG, Propane |
| Type 42 | G 1/2" LH EXT | Toxic | Methylamine |
| Type 43 | 0.825" - 14 NGO LH EXT | Toxic / Corrosive | Hydrogen Chloride, Hydrogen Sulphide |
| Type 44 | G 3/8" BSP | Toxic, Non Flammable Mixtures | Calibration gas mixtures |
| Type 50 | 24x2 Whit | Inert | Nitrogen =<20,000 kPa |
| Type 51 | 1.045" - 14 NGO RH INT | Inert | Nitrogen >20,000 kPa |
| Type 60 | 27x2 Whit | Non Flammable | Air =<20,000 kPa |
| Type 61 | 0.825" - 14 NGO | Non Flammable | Air >20,000 kPa |