How to set and adjust the boiler pressure control?
Electric Heating Boiler Automatic Steam Generator Adjustable Pressure Switch Control Electric Boiler Pressure Controller - Personal Care Appliance Parts - AliExpress
Amazon.com: Boiler Pressure Switch with SPDT (Range: -0.2 to 8 bar) for Liquids, Gaseous & Steam Plant, Compressors and Automobile Industry by Danfoss Model: KPI-35(Pack of 10) : Industrial & Scientific