Cylinder Valve Connections - Nut & Stem

Cylinder valve outlet connections tend to be of two main types: 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 data sheet for the given cylinder size and compare that to the manufacturer's data on the gas control equipment used.

All our Cylinder Nut and Stems are manufactured and tested in the UK!

AFNOR cylinder connections available in Brass chrome plated and 316L Stainless Steel C,E and F. 

Can't see it on here....? Send us an email today. More connections, blanking plugs for almost every cylinder outlets are available today from our store.

 

Please enquire direct for Washers, we have access to nearly all variants for the Nuts and Stems listed below. Email:- [email protected]

REMEMBER! Where a PTFE sealing washer is used, this should be replaced after each cylinder change out.

NUT & STEM BS 341 No.3 BRASS - BULL NOSE NUT & STEM BS 341 No.3 BRASS - BULL NOSE NUT & STEM BS 341 No.3 STAINLESS STEEL - BULL NOSE NUT & STEM BS 341 No.3 STAINLESS STEEL - BULL NOSE NUT & STEM BS 341 No.4 BRASS - BULL NOSE NUT & STEM BS 341 No.4 BRASS - BULL NOSE NUT & STEM BS 341 No.4 STAINLESS - BULL NOSE NUT & STEM BS 341 No.4 STAINLESS - BULL NOSE NUT & STEM BS 341 No.6 BRASS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.6 BRASS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.6 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.6 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.7 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.7 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.8 BRASS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.8 BRASS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.8 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.8 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.10 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.10 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.12 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.12 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.13 BRASS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.13 BRASS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.14 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.14 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.15 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM BS 341 No.15 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.1 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.1 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.6 BRASS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.6 BRASS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.6 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.6 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.8 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.8 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.9 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.9 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.10 BRASS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.10 BRASS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.10 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.10 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.14 BRASS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.14 BRASS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.14 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM DIN 477 No.14 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM CGA 170 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM CGA 170 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM CGA 180 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM CGA 180 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM CGA 320 BRASS - FLAT SEAT WITH WASHER NUT & STEM CGA 320 BRASS - FLAT SEAT WITH WASHER NUT & STEM CGA 330 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM CGA 330 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM CGA 350 BRASS - BULL NOSE NUT & STEM CGA 350 BRASS - BULL NOSE NUT & STEM CGA 350 STAINLESS - BULL NOSE NUT & STEM CGA 350 STAINLESS - BULL NOSE NUT & STEM CGA 580 BRASS - BULL NOSE NUT & STEM CGA 580 BRASS - BULL NOSE NUT & STEM CGA 580 STAINLESS - BULL NOSE NUT & STEM CGA 580 STAINLESS - BULL NOSE 99-027157 NUT & STEM DIN 477 No.7 STAINLESS - FLAT SEAT WITH WASHER 99-027157 NUT & STEM DIN 477 No.7 STAINLESS - FLAT SEAT WITH WASHER NUT & STEM NEVOC NO.30 NUT & STEM NEVOC NO.30 NUT & STEM CYLINDER CONNECTION CGA500 NUT & STEM CYLINDER CONNECTION CGA500 Nevoc Nut and Stem -  Adjustable Spanner Nevoc Nut and Stem - Adjustable Spanner