EC21 Buying Leads Catalogs - pneumatic actuator http://importer.ec21.com/buy_leads/pneumatic actuator.html Buy Butterfly Valves for Drinking Waterhttp://www.ec21.com/offer_detail/Buy_Butterfly_Valves_for_Drinking--7165672.htmlactuator 1pcs DN800 bareshaft 1pc DN600 bareshaft 3pcs DN300 bareshaft 5pcs DN600 with double acting pneumatic actuator20090108