Anyone who is in the pipeline business would be able to answer this question without having to think about it, as a combination valve performs some essential operations. For the rest of us, a combination valve enables air to be removed from the pipeline, whenever a vacuum is required. The mining industry requires many kinds of combination valve, as pressurised water is always needed, and with the ability to allow water into the pipeline, the combination valve enables emptying the system. Slurry Valves A slurry valve is used with liquids under pressure, with the liquid containing at least 10% of…