Led Ceiling Soffits, A Fire Hose With Attached Connecting Heads And Attached Manual Fire Nozzle Is Designed To Supply Water Under Pressure From An Internal Fire Hydrant. The Hose Is Installed In Built-In Wall Or Wall Cabinets, Designed For A Working Pressure Of 0.7 Mpa. The Length Of The Hose Is At Least 50 M. Depending On The Fire Hazard Of The Facility, The Internal Fire Hydrant Is Installed In Two Standard Sizes: D-51 With A Connecting Pressure Head Gr-51 And D-66 With A Connecting Pressure Head Gr-70
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