Fire protection - Automatic sprinkler systems - Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
German title
Brandschutz - Automatische Sprinkleranlagen - Teil 2: Anforderungen und Prüfverfahren für Nassalarmventile, Verzögerungseinrichtungen und wassergetriebene Alarmglocken
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