Turn on back wash drainagevalve (V-4) and air scour valve (V-2). Air scour lasts for a moment.
将反洗排水阀(V - 4),空气洗净阀(V - 2)置于[开],进行空气清洗并持续一段时间。
2
Introduces technical characteristics, structure and working principle of oil automatic cut off drainagevalve, discusses the application of the valve in oil tanker areas.
介绍自动截油排水阀的技术特点、结构和工作原理,探讨该阀在油品罐区中的应用。
3
Water drainage hose, charging valve shall be kept open.