Cavagna LPG Single Cylinder Propane Gas Regulator Kit – 21mm Clip-On The Cavagna LPG Single Cylinder Propane Gas Regulator Kit – 21mm Clip-On (Model HA101T) is a safe, easy to install solution for single-cylinder LPG systems. Designed for Northern Ireland’s 21mm propane cylinders, this kit is perfect for domestic and commercial LPG users who need 37mbar low-pressure propane output. Includes a high quality Cavagna regulator, 20 high pressure pigtail with excess-flow and non-return valve protection, mounting bracket and 3/8 test-point outlet for safe commission testing. Built for durability and long term performance this kit is ideal for heating, cooking and leisure appliances. Features 21mm Clip-On Connection – Quick and easy to attach to NI propane cylinders, no too