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Automatic Air Vent Valve for Radiators CALEFFI 1" Left (507621)
Summary description:
Automatic air vent valve for radiators by CALEFFI, 1" connection, left-hand orientation (model 507621). Designed to remove trapped air from radiator and heating circuits automatically to maintain system efficiency and reduce noise. Suitable for installation on radiator bodies or returns where a left-threaded 1" port is required; commonly used in residential and commercial hot-water heating systems.