Slant/fin, the name you trust for manufacturing and distributing baseboard…. Including boiler repairs and replace, radiators, pipework etc. We could then say that an electric steam boiler works in a similar way as a fire heated boiler, the difference being the means by which the water is heated. If your pressure is dropping quickly in your boiler and you want to play it safe, you can turn off the water using the mains stopcock. Sodium.