Gas bullnose

Gas bullnose
Description:
Gas cylinder fitting. BS3 for inert gases like argon, nitrogen,
helium as well as oxygen. 
BS4 for flammable gases like hydrogen, methane, 
acetylene etc. CGA fittings are also available
 (eg CGA 580, CGA 376, CGA 679, CGA 660, CGA 350).

 BS341 Model No. Material Nut Nipple Washer
 No.2 SS-BS341#2-NT4 Stainless Steel G5/8-14 3" Length
 BP-BS341#2-NT4 Brass / Nickel-Plated (Left Hand) (1/4" NPT)
 No.3 SS-BS341-3 Stainless Steel G5/8-14 3" Length
 BP-BS341-3 Brass / Nickel-Plated (Left Hand) (1/4" NPT)
 No.4 SS-BS341-4 Stainless Steel G5/8-14 3" Length
 BP-BS341-4 Brass / Nickel-Plated (Left Hand) (1/4" NPT)
 DIN477 Model No. Material Nut Nipple Washer
 No.5 SS-DIN477-5 Stainless Steel 1"-11 2-1/2 " Length Nylon
   BP-DIN477-5 Brass / Nickel-Plated (Left Hand) (1/4" NPT)  
 No.6 SS-DIN477-6 Stainless Steel W21.8-14 2.35 " Length Nylon
 BP-DIN477-6 Brass / Nickel-Plated (Right Hand) (1/4" NPT)
 No.8 SS-DIN477-8 Stainless Steel 1"-11 2.35 " Length PTFE
 BP-DIN477-8 Brass / Nickel-Plated (Right Hand) (1/4" NPT)  
 No.9 SS-DIN477-9 Stainless Steel G3/4-14 2.35 " Length Nylon
    BP-DIN477-9 Brass / Nickel-Plated (Right Hand) (1/4" NPT)
 CGA Model No. Material Nut Nipple Washer
 330 SS-CGA330 Stainless Steel 0.830-14NGO 2 " Length Nylon
 BP-CGA330 Brass / Nickel-Plated (Left Hand) (1/4" NPT)
 350 SS-CGA350 Stainless Steel 0.830-14NGO 2-1/2 " Length Nylon
 BP-CGA350 Brass / Nickel-Plated (Left Hand) (1/4" NPT)  
 580 SS-CGA580 Stainless Steel 0.960-14NGO 3 " Length
 BP-CGA580 Brass / Nickel-Plated (Right Hand) (1/4" NPT)
 590 SS-CGA590 Stainless Steel 0.960-14NGO 3 " Length Nylon
 BP-CGA590 Brass / Nickel-Plated (Left Hand) (1/4" NPT)
 660 SS-CGA660 Stainless Steel 1.035-14NGO 2 " Length PTFE
 BP-CGA660 Brass / Nickel-Plated (Right Hand) (1/4" NPT)

 Other types of gas connections (used mostly in medical gas)

1. CGA yoke type gas connection (CGA 870, CGA 950, CGA 910, CGA 965)

2. Handwheel type bull nose (BS 341 no 3 for medical air, medical oxygen)                                                                                                                                                                                    


There are many different types of valve outlet connection.  The two basic types are internal - accepting a bull nose or 

external - using flat-seated with a washer.  Within these types there are variations of thread type, size and direction as 

well as outside diameter.

Regulator inlet connections are normally available in brass or stainless steel.  Some fittings may not be available in 

brass depending on the properties of the gas they are intended to be used with.  A good guideline is to follow the 

cylinder valve material, if the cylinder valve is brass, brass or stainless regulators and fittings should be acceptable,

 if the cylinder valve is stainless steel, brass regulators and fittings should not be used.

Depending on where cylinders are sourced different standards apply, in the the UK it is BS 341 but German DIN 477 

and American CGA are also available.  The only way to be certain is to check the gas company's (Messer, Linde, 

Air Liquide, Airgas, Air Products, Calgaz etc) data sheet for the 

given cylinder size and compare that to the manufacturer's data on the gas control equipment used.

 

NUT & STEM BS 341 No.3 BRASS - BULL NOSENUT & STEM BS 341 No.3 BRASS - BULL NOSENUT & STEM BS 341 No.3 STAINLESS STEEL - BULL NOSENUT & STEM BS 341 No.3 STAINLESS STEEL - BULL NOSENUT & STEM BS 341 No.4 BRASS - BULL NOSENUT & STEM BS 341 No.4 BRASS - BULL NOSENUT & STEM BS 341 No.4 STAINLESS - BULL NOSENUT & STEM BS 341 No.4 STAINLESS - BULL NOSENUT & STEM BS 341 No.6 BRASS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.6 BRASS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.6 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.6 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.7 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.7 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.8 BRASS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.8 BRASS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.8 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.8 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.10 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.10 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.12 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.12 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.13 BRASS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.13 BRASS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.14 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.14 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.15 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM BS 341 No.15 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.1 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.1 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.6 BRASS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.6 BRASS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.6 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.6 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.8 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.8 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.9 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.9 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.10 BRASS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.10 BRASS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.10 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.10 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.14 BRASS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.14 BRASS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.14 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM DIN 477 No.14 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM CGA 170 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM CGA 170 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM CGA 180 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM CGA 180 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM CGA 320 BRASS - FLAT SEAT WITH WASHERNUT & STEM CGA 320 BRASS - FLAT SEAT WITH WASHERNUT & STEM CGA 330 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM CGA 330 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM CGA 350 BRASS - BULL NOSENUT & STEM CGA 350 BRASS - BULL NOSENUT & STEM CGA 350 STAINLESS - BULL NOSENUT & STEM CGA 350 STAINLESS - BULL NOSENUT & STEM CGA 580 BRASS - BULL NOSENUT & STEM CGA 580 BRASS - BULL NOSENUT & STEM CGA 580 STAINLESS - BULL NOSENUT & STEM CGA 580 STAINLESS - BULL NOSE99-027157 NUT & STEM DIN 477 No.7 STAINLESS - FLAT SEAT WITH WASHER99-027157 NUT & STEM DIN 477 No.7 STAINLESS - FLAT SEAT WITH WASHERNUT & STEM NEVOC NO.30NUT & STEM NEVOC NO.30NUT & STEM CYLINDER CONNECTION CGA500NUT & STEM CYLINDER CONNECTION CGA500

GasBSGasBS
Acetylene4Hydrogen Chloride6
Air3Hydrogen Sulphide15
Allene-Iso-Butane4
Ammonia10Iso-Butylene4
Argon3Krypton3
Arsine4Methane4
1,3-Butadiene4Methyl Chloride7
Butane4Methyl Mercaptan-
Butenes4Monoethylamine11
Carbon Dioxide8Monomethylamine11
Carbon Monoxide4Natural Gas4
Carbonyl Fluoride-Neon3
Carbonyl Sulphide-Nitric Acid14
Chlorine6Nitrogen3
Cyanogen-Nitrogen Dioxide14
Deuterium4Nitrous Oxide13
Dimethylamine11Oxygen3
Dimethyl Ether-Phosgene6
Ethane4Phosphine4
Ethyl Acetylene-Propane4
Ethyl Chloride7Propylene4
Ethylene4Silane-
Ethylene Oxide7Silicon Tetrafluoride-
Halocarbon-146Sulphur Dioxide12
Halocarbon-226Sulphur Hexafluoride6
Helium3Trimethylamine11
Hydrogen4Vinyl Chloride7
Hydrogen Bromide-Xenon3