Connect M10x1 CO2 cartridge thread to CGA-320 CO2 cylinder valve

How to join M10 x 1 mm and 0.825"-14 NGO RH, and what stops it leaking.

End AM10x1 CO2 cartridge thread (M10 x 1 mm)Needs an adapterEnd BCGA-320 CO2 cylinder valve (0.825"-14 NGO RH)

Not a direct fit. Joining M10x1 CO2 cartridge thread to CGA-320 CO2 cylinder valve needs a M10x1 cartridge holder or adapter to a CGA-320 regulator.

The two ends

End A: M10x1 CO2 cartridge thread (M10 x 1 mm)
End B: CGA-320 CO2 cylinder valve (0.825"-14 NGO RH)
A seals on: seat in the piercer or valve against the cartridge
B seals on: nylon or fibre washer inside the nut against the valve outlet
Part needed: M10x1 cartridge holder or adapter to a CGA-320 regulator

The part to buy

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An M10x1 cartridge is a fine metric thread that does not reach a CGA-320 regulator directly; an M10x1 holder or adapter pierces or seats the cartridge and presents a standard connection a CGA-320 regulator can use.

Confirm the cartridge is genuinely M10x1 before buying, because it is easy to mistake for a soda cylinder or another small thread. The adapter is the only path to a regulator; a plain thread mismatch will not seal under CO2 pressure.

Related connections

M10x1 CO2 cartridge threadM10 x 1 mm CGA-320 CO2 cylinder valve0.825"-14 NGO RH CGA-320 CO2 cylinder valve to W21.8 CO2 cylinder valveadapter CGA-320 CO2 cylinder valve to G5/8 regulator inletadapter TR21-4 soda cylinder valve to CGA-320 CO2 cylinder valveadapter CGA-320 CO2 cylinder valve to 1/4" NPTadapter

Sources: CO2Art guide to cylinder connections: disposable/small cylinder threads (M10x1, 3/8-24 UNF 16g, 5/8-24 UNF 74g, M16x1.5 95g) · CGA-320 CO2 cylinder valve outlet thread reference (0.825in-14 NGO, RH) · CO2Art guide to cylinder connections (CGA320, W21.8, DIN477, BS341, G5/8, TR21-4)