![](http://www.alamy.com/thumbs/6/51D9D7B2-07CF-4FEA-B810-0A2F96B0241E/AMEMRJ.jpg)
ball and gate valves on a pipeline riser header.
Size: 5400px × 3600px
Location: Southern Alberta, Canada
Photo credit: © Raymond Chiang / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: gas, header, natrual, natural, oil, pipeline, riser, valves