... reasonable price ,Certificates:ISO9001,CE Product DescriptionTechnical Specifications of pneumatic valve 2. Features: A. Connection ends: Flange ends. B. ... seal creadible and prevent wedge being blocked,4, Manual valve with DN over or equal to NPS10", class 400 pounds ... life.DIN valves, BS valves also available,With out standing manufacter power, Welcome worldwide customers to order specail kinds of ...