目录简介    |     Contents Foreword	 1   Scope	 2   Normative references	 3   Terms and definitions	 4   Requirements	 5   Test methods	 6   Inspection rules	 7   Label and instructions	 8   Packaging, transport and storage	 Annex A (Normative) Hydraulic friction test methods	 Annex B (Normative) Main sealing of clack valve	 Annex C (Informative) Installation and use instruction of wet alarm valve, retard chamber and water motor alarm	
 
   |