Cavagna 37mbar Propane Gas Regulator – Second Stage 4kg/hr, 1/4 x 3/8 BSP Female The Cavagna 37mbar Second Stage Propane Gas Regulator – 4kg/hr reduces the pressure to the safe and useable level required by gas appliances. Working with a first stage regulator, this second stage unit gives consistent low pressure gas flow, perfect for domestic and commercial use. Made by Cavagna, a global leader in gas control technology, this regulator combines tough construction, reliable performance and long life. Its compact and easy to install design fits seamlessly into propane gas systems and is CE and EN16129 approved for safety and quality. Features Second Stage Pressure Reduction – 37mbar out