Why do cylinder valves have different thread types? – Harris

Harris Products - 540 CGA Inlet Connection, Male Fitting, 125 Max psi, Oxygen Welding Regulator - 87895140 - MSC Industrial Supply

GrifTan AC-12 3-1/2 Acetylene Cylinder Regulator Protector Safety

Bulk Gas Storage Cylinder Valve Adapters with QD Stem

Harris Type 30 Co2 Stem and Nut -1/4 NPT Thread Q922M0 66592M0 - MADE IN EUROPE

CGA Fitting - w/Integral Check Valve (Brass) - MATHESON Online Store

RELIABILT Brass 3/4-in Copper Sweat Gate Valve in the Gate Valves department at

Max 1/2-in Push-to-Connect Brass Ball Valve

SharkBite Max 1/2-in Push-to-Connect Brass Ball Valve

HARRIS CHECK VALVE 88-6CVTR 9/16-18 RH 4300062 4300162

HARRIS, Two Stage, CGA 580 Inlet, High Purity Gas Regulator