... , Concentric reduver, Eccentric reducer, Union( Nut. male ,liner).Valve:Actuator for butterfly valve , Clamp butterfly valve , Welded buterfly valve, Male-weld ... steel structural components.......stainless steel AISI304. Valve handle.......chrome-plated for reinforcement ,stainless steel AISI 304,AISI316L. Valve seal ................EPDM /Silicone /viton ...