... wcb,etc 3.size:4'' 4.we can do the valve parts according to the clients' requir 1.butterfly valve2.material ... ,DIN,JIS etc5.Weight range:0.01--40kg6.Application:industrial parts,machinery parts,valve parts,train,craft,doorhandle,construction and so on ... , weapon, sanitary bath equipment and petroleum equipment etc..9. Products: valve, flange, elbow, screw nut, screw bolt, pipe fitting, impeller, ...