Williams (NYSE: WMB) is having a big year. The natural gas pipeline giant has gone on a shopping spree and recently unveiled its third acquisition to enhance its gas pipeline network. These deals will boost the company's cash flow, giving it more fuel to sustain and expand its 5.1%-yielding dividend.

Here's a look at Williams' latest deal and how it will help put its high-yielding dividend on an even firmer foundation.

Williams recently agreed to acquire MountainWest Pipelines from Southwest Gas (NYSE: SWX). It's paying $1.07 billion in cash and assuming $430 million of MoutainWest's debt. MountainWest comprises a roughly 2,000-mile interstate natural gas pipeline system that runs across Utah, Wyoming, and Colorado. It has 8 billion cubic feet per day of transmission capacity and 56 billion cubic feet of natural gas storage. 

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Source Fool.com