Stem Bearing : Housing in Cast Iron, Gear in S.G. Iron & Worm in EN8
Stem : Poly Acetal (Delrin)
Body : Cast Iron ASTM A126 Class B / EN 1561 No.EN-Jr. 1030/ Ductile Iron ASTM A395 Gr. 60-40-18/ EN 1563 NO.EN-JS 1024/ Carbon Steel ASTM A216 Gr. WCB
Body Seat ** : Stainless Steel ASTM A276 Type 410/ 304/316/ Monel