... Durable Forged Brass Check Valve. 1.Material:brass body/stem,zinc/plastic handle. 2.Medium:water,oil,gas. 3.Certification:CE. Durable Forged Brass Check Valve.1.Model ... No. : LDM-CV042.Material: Body Brass,Hpb57-3,Hpb59-3,CW614n,CW617n, ... Gas,etc.6.Size: 1/2''----4''.7.Surface: Brass yellow.8.Standard: GB,DIN,ANSI,EN,BS,UIN,JIS.9. ...