Tank Drop Off

Tank Drop Off Pigging

Overview and System Demonstration

A Tank Drop-off System is similar to a standard single-pig system, but incorporates multiple destinations on the same line to deliver product to.

There is no limit on the amount of drop-offs that can be used. After a transfer to a tank, the automatic pigging sequence sends a pig to the blocking valve for that tank. Any blocking valves between the destination and the pig are opened to allow for a clear route. The pig is then returned with the same receive-return pigging station used on a single-pig system.

How a Tank Drop Off Pigging System Works

To see an animation of a typical Tank Drop Off Pigging System, please click the demonstration video on the right.

This example uses a 3-way 120° Pig Launch Valve and a 2-way Ball Valve both using HPS Inflatable Seal Technology.

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