View Larger Image Eccentric butterfly valve, double offset Eccentric butterfly valve, double offset API609 standard, Size: 18″ and 20″, Class: 150LB, end: Wafer type, body: ASTM A216 WCB, disc: ASTM A351 CF8, shaft: 410SS, seat: EPDM, worm gear operated。 chinagangye2018-09-16T04:10:24+08:00 Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail