Specialty gases cylinder outlets

- Jul 31, 2020-

The standards referred to are occasionally implemented with slight variations in the countries where the standard applies, eg DIN in Europe. Right handed, external thread is the normal tread unless LH (left handed) on INT (Internal) is annotated. If required, the actual cylinder outlet should be confirmed with your local supplier at the time of supply.

Please select your connection type below:

ABNT (Associação Brasileira de Normas Técnicas)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
ABNT 172-13/8" -18 NGT INTToxicAmmonia
ABNT 218-1W 21.8 x 1/14" INTOxidiserAir, Oxygen, Oxygen Mix >20%
ABNT 218-2W 21.8 x 1/14" LH INTFlammableHydrogen, Methane
ABNT 225-20.885" - 14 NGO LHFlammableAcetylene, Butane
ABNT 245-10.960" - 14 NGOInertArgon, Helium, Nitrogen
ABNT 245-10.960" - 14 NGOInertInert gases + Oxygen Mix <20%
ABNT 245-20.960" - 14 NGO LHNon FlammableSulphur Hexafluoride
ABNT 262-11.035" - 14 NGO INTToxicSulphur Dioxide, Chlorine
ABNT 209-10.830" - 14 NGO INTNon FlammableCarbon Dioxide
ABNT 209-20.830" - 14 NGO LH INT (Round Nipple)Toxic, FlammableCarbon Monoxide, Phosphine, Silane
ABNT 209-40.830" - 14 NGO LH INT (Flat Nipple)ToxicHydrogen Chloride, Hydrogen Sulphide
ABNT 166-1G 3/8" A - ISO 228-1OxidiserNitrous Oxide


AFNOR (Association Française de Normalisation)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
NF BW 30 x 1.75OxidiserIndustrial Air
NF CSI 21.7 x 1.814Inert GasesArgon, Helium, Nitrogen
NF ESI 21.7 x 1.814 LHFlammableHydrogen, Hydrogen Mix >4%
NF FSI 22.94 x 1.814 INTOxidiserOxygen
NF GSI 26 x 1.5 INTOxidiserNitrous Oxide
NF HW 22.91 x 1.814 LH INTFlammableAcetylene
NF JW 25.4 x 3.175CorrosiveChlorine
NF KW 27 x 2CorrosiveHydrogen Chloride
NF LW 27 x 2OxidiserInert gases + Oxygen Mix > 21%
NF MW 30 x 2OxidiserInert gases + Oxygen Mix > 21% & CO2 < 7%
NF PW 27 x 2Oxidiser or corrosiveNitric Oxide, Nitrogen Dioxide


BS 341 (British Standard) 

Connector type
Connector description
Generic gas property
Example gases or mixtures components
BS 341 No. 2G 5/8" LHFlammableAcetylene
BS 341 No. 3G 5/8" INTInertAir, Argon, Neon, Nitrogen
BS 341 No. 3G 5/8" INTOxidiserOxygen
BS 341 No. 4G 5/8" LH INTFlammableAcetylene, Hydrogen
BS 341 No. 4G 5/8" LH INTFlammableCarbon Monoxide, Methane, Natural Gas
BS 341 No. 6G 5/8"ToxicChlorine, Hydrogen Chloride
BS 341 No. 7G 5/8" LHFlammable RefrigerantsFlammable Refrigerants
BS 341 No. 8W 0.860" x 14 TPINon FlammableCarbon Dioxide
BS 341 No. 10G 1/2"ToxicAmmonia
BS 341 No. 12G 1/2"ToxicSulphur Dioxide
BS 341 No. 13W 11/16" - 20 TPIOxidiserNitrous Oxide
BS 341 No. 14G 3/8"ToxicHydrogen Cyanide, Nitric Oxide
BS 341 No. 15G 3/8" LHToxicCarbonyl Sulphide, Hydrogen Sulphide

 

CGA (US Compressed Gas Association)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
CGA 1100.3125 - 32 UNEF INTSmall CylindersAll Gases
CGA 1709/16" - 18 UNF INTNon Corrosive,
Small Cylinders
Argon, Helium
CGA 1805/8" - 18 UNF INTSmall CylindersAll Gases
CGA 2403/8" - 18 NPTToxicAmmonia
CGA 2960.803" - 14 UNS INTOxidising MixturesOxygen Mix > 23%
CGA 3000.825" - 14 NGORefrigerantEthyl Chloride
CGA 3200.825" - 14 NGONon FlammableCarbon Dioxide
CGA 3260.825" - 14 NGOOxidiserAir
CGA 3300.825" - 14 NGO LHToxicHydrogen Chloride
CGA 3460.825" - 14 NGOOxidiserAir
CGA 3500.825" - 14 NGO LHFlammableHydrogen, Methane
CGA 5100.825" - 14 NGO LH INTFlammablePropane
CGA 5400.903" - 14 NGOOxidiserOxygen
CGA 5800.965" - 14 NGO INTInertArgon, Nitrogen
CGA 5900.965" - 14 NGO LM INTOxidiserAir
CGA 3301.030" - 14 NGOToxicHydrogen Sulphide
CGA 6791.030" - 14 NGO LHHigh PressureNitrogen
CGA 7051.125" - 14 UNS LHToxicAmmonia

 

DIN 477 (Deutsche Industrie Norm)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
DIN 477 No. 1W 21.8 x 1/14" LHFlammableHydrogen, Propane
DIN 477 No. 2W 21.8" x 1/14" LHFlammablePropane
DIN 477 No. 3YokeFlammableAcetylene
DIN 477 No. 3.1M 24 x 2" LHFlammableAcetylene
DIN 477 No. 5W 1" x 1/8" LHToxicCarbon Monoxide
DIN 477 No. 6W 21.8 x 1/14"VariousArgon, Helium, Carbon Dioxide
DIN 477 No. 7G 5/8"ToxicSulphur Dioxide
DIN 477 No. 8W 1" x 1/8"ToxicBoron Trichloride
DIN 477 No. 9G 3/4"OxidiserOxygen
DIN 477 No. 10W 24.32 x 1/14" RHInertsNitrogen
DIN 477 No. 11G 3/8"OxidiserNitrous Oxide (>3 l size)
DIN 477 No. 12G 3/4" INTOxidiserNitrous Oxide (<3 l size)
DIN 477 No. 13G 5/8" INTNon FlammableAir
DIN 477 No. 14M 19 x 1.5 LHVariousMixtures

 

IRAM 2539 (Instituto Argentino de Racionalización de Materiales)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
IRAM 2539 No. 13/4" BSP x 1/14" - INTFlammableAcetylene
IRAM 2539 No. 2W 21.8 - 1 1/4VariousOxygen, Sulphur Hexafluoride
IRAM 2539 No. 35/8" BSP - INTNon FlammableArgon, Nitrogen
IRAM 2539 No. 4W 21.8 - 1/4FlammableEthane, Hydrogen
IRAM 2539 No. 53/8" BSP - INTOxidiserNitrous Oxide

 

ISO 5145 (Provisional standard, previously NEVOC)

Connector type
Connector description
Generic gas property
Example gases & mixtures components
ISO 5145 No.1W 24 x 2 11,2 - 16,8 RHInertMedical Helium & Xenon
ISO 5145 No.2W 24 x 2 11,9 - 16,1 RHOxidiserOxygen
ISO 5145 No.4W 24 x 2 13,3 - 14,7 RHInertInert gases & mixes, except He & Xe
ISO 5145 No.9W 24 x 2 13,3 - 14,7 LHFlammableMixes with a flammable gas, except Hydrogen
ISO 5145 No.10W 24 x 2 14 - 14 LHFlammableHydrogen
ISO 5145 No.11W 27 x 2 11,8 - 20,2 RHInertNitrogen
ISO 5145 No.17W 27 x 2 16 - 16 RHInertCarbon Dioxide
ISO 5145 No.24W 27 x 2 16 - 16 LHFlammableLPG
ISO 5145 No.30W 30 x 2 15,9 - 20,1 RHInertHelium, Argon, Nitrogen, inert mixes*
ISO 5145 No.32W 30 x 2 17,3 - 18,7 RHOxidiserOxygen*
ISO 5145 No.38W 30 x 2 15,2 - 20,8 LHFlammableMixes with a flammable gas*
ISO 5145 No.41W 30 x 2 17,3 - 18,7 LHRefrigerantsRefrigerant 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 BM 30 x 1.75Non FlammableAir
TIPO CW 21.7 x 1/14"InertArgon, Helium, Nitrogen
TIPO EW 21.7 x 1/14" LHFlammableHydrogen, Methane, Propane
TIPO FG 5/8" INTOxidiserOxygen
TIPO GM 26 x 1.5 INTOxidising mixturesOxygen Mix > 23%
TIPO HG 5/8" LH INTFlammableAcetylene
TIPO JW 1"Toxic and CorrosiveHydrogen Chloride, Hydrogen Bromide
TIPO MM 19 x 1.5 LHMixturesCalibration Gas Mixtures
TIPO TW 31.75 x 1/7" 237Toxic or CorrosiveChlorine Drum Tanks
TIPO UG 3/8"OxidiserNitrous Oxide

 

NEN 3268 (Nederlandse Norm)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
LU 0M 19 x 1.5 LHFlammable MixturesFlammable Mixtures
LU 1W 21.8 - 1/14" LHFlammableHydrogen, Methane
LU 4W 25.4 x 3.175" LHToxicHydrogen Cyanide
RI 2G 22.91 x 1.814" RHOxidiserOxygen
RU 1W 21.8 - 1/14"RefigerantsAmmonia, Carbon Dioxide
RU 3W 24.32 - 1/14"InertArgon, Helium, Nitrogen
RU 4W 25.4 x 3.175" RHToxicChlorine, Hydrogen Chloride, Sulphur Dioxide
RU 6W 28.81 x 1.814" RHOxidiserAir

 

UNI (Ente Nazionale Italiano di Unificazione)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
UNI 4405W 20 x 1/14" LHFlammableHydrogen
UNI 4406W 21.7 x 1/14"Non Flammable / OxidiserCarbon Dioxide, Oxygen
UNI 4407W 30 x 1/14"ToxicAmmonia
UNI 4408W 1" x 1/8"ToxicChlorine
UNI 4409W 21.7 x 1/14"InertNitrogen
UNI 4410W 30 x 1/14"Non FlammableAir
UNI 4411W 22.9 x 1/14"FlammableAcetylene
UNI 4412W 24.5 x 1/14"InertArgon, Helium
UNI 9097G 3/8" EXTOxidiserNitrous Oxide

 

AS 2473.2 (Australian Standard)

Connector type
Connector description
Generic gas property
Example gases or mixtures components
Type 10G 5/8" RH INTNon FlammableArgon, Helium, Oxygen =< 20,000 kPa
Type 11G 5/8" RH INT
Extended nipple
OxidiserOxygen >20,000 kPa, =< 25,000 kPa
Type 20G 5/8" LH INTFlammableAcetylene, Hydrogen, Ethylene, Methane
Type 210.885" - 14 NGO LH INTFlammableLPG, Propane
Type 300.860" - 14 BSW RH EXTNon Flammable / OxidiserCarbon Dioxide, Nitrous Oxide
Type 31G 5/8"Chemical GasesSulphur Hexafluoride, Phosgene, Methyl Bromide
Type 32G 1/2"ToxicAmmonia, Sulphur Dioxide
Type 33G 1/4"Non Toxic, Non Flammable MixturesSmall cyls <4.5l water capacity
Type 34G 3/4"RefrigerantsR134a
Type 40G 5/8" LH EXTToxicEthylene Oxide
Type 41G 3/8" BSP LH EXTFlammableLPG, Propane
Type 42G 1/2" LH EXTToxicMethylamine
Type 430.825" - 14 NGO LH EXTToxic / CorrosiveHydrogen Chloride, Hydrogen Sulphide
Type 44G 3/8" BSPToxic, Non Flammable MixturesCalibration gas mixtures
Type 5024x2 WhitInertNitrogen =<20,000 kPa
Type 511.045" - 14 NGO RH INTInertNitrogen >20,000 kPa
Type 6027x2 WhitNon FlammableAir =<20,000 kPa
Type 610.825" - 14 NGONon FlammableAir >20,000 kPa