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| Основное устройство предотвращения противотока пониженного давления (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) | |||
| Inglés tesauro | |||
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| Rules of Procedure of the Boards of Appeal (abolshakov) | |||