View Larger Image New Opening Announced Kerotest announces its new 12-inch full port POLYBALL® Polyethylene Ball Valves. They are built with an industry-leading 10.1-inch port opening and 6:1 gearbox ratio. KerOTest34562019-01-04T15:00:12+00:00January 3rd, 2019| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail About the Author: KerOTest3456