EN 1151-1This description is for standard: EN 1151-1This part of EN 1151 establishes general principles for the construction, use and testing of circulation pumps of the glandless type, having a rated
EN 1151-2This description is for standard: EN 1151-2This part of EN 1151 specifies a test code for the vibro-acoustic characterisation of circulation pumps as defined in EN 1151-1, and is limited to c