... лишних хлопот. There are different types shut-off valves. Each type was designed to solve aspecific operational tasks. However, there applications where possible to use any type of reinforcement. In this article we reviewed features choice of type valving which depending on operating conditions, thepros and cons, as well as limitations on their application. Results Huge variety of stop valves typeand its producers puts consumer witha difficult task a choice. Each type has itsown advantages and ...

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