Terms for subject Firefighting and fire-control systems containing противоток

Russian	English
Основное устройство предотвращения противотока пониженного давления	RPBA (Reduced-Pressure Principle Backflow Prevention Assembly – Two independently acting check valves together with a hydraulically operating, mechanically independent pressure differential relief valve located between the check valves, along with two resilient-seated shutoff valves, all as an assembly, and equipped with properly located test cocks. (NFPA 25) coopernord)