American Water Works Association conference and exposition in Denver, Colorado June 9 to 13th, 2013

Will you be attending the American Water Works Association
conference and exposition in Denver, Colorado June 9 to 13th, 2013
"Uniting the World of Water"?

What are pipeline spheres used for?

Pipeline spheres can be used to remove liquids from gas lines. They are used in hydrostatic testing. They can be used as a signal actuating device. They can be used to separate liquids. They can be used as a liquid displacer in meter prover  loops.

for more info see pipeline spheres

Pipeline Pigs definition and explanation

http://en.wikipedia.org/wiki/Pigging

Pigs or Pipeline Spheres from Maloney

http://www.maloneytech.com/products/spheres/