Single Ferrule Vs Double Ferrule Fittings

Stainless steel compression tube fittings are used for a range of applications in different industrial settings. Twin ferrule fitting types are preferred for higher working pressures and harsh applications. This also makes twin ferrule fittings a safe choice for the full gamut of low-pressure operation right through to high-pressure. So, there are two Ferrule Fittings Types, and what are the main differences between single-ferrule and double-ferrule tube fittings?