... Pneumatic,Manual-Air-HydraulicDN(NPS)2"~32"PN(LB)Class 150LB91.0Mpa~1.6Mpa)Main Materials(Body) ... heavy medium piping system for coal preparation plantPneumatic 150lb ceramic knife gate valve features:1, seal by structural ceramics ... wear-resisting dry ash, slag water inmine or chemical industry.2, The inlet and outlet mouth is ... connecting standard:ASME B16.5, ASME B 16.47,MSS SP-81 DIN 2532,JIS B2212 ...