Cavagna LPG Single Cylinder Regulator Kit with Galv. Pigtail & OPSO The Cavagna LPG Single Cylinder Gas Regulator Kit with OPSO is designed to give you a safe, stable and uninterrupted propane gas supply for all your UK residential, commercial and outdoor applications. With a built-in Over Pressure Shut Off (OPSO) mechanism this premium regulator will automatically shut off the gas flow if unsafe pressure levels are detected. Designed for use with standard UK POL propane cylinders this kit ensures full compatibility with domestic and commercial LPG setups. Durable and easy to install it’s a complete and reliable solution for single-cylinder propane regulation. Features OPSO Safety Protection – Cuts gas supply during over-pressure events for maximum safety.