Wafer/lugged/flanged butterfly valve, soft seat or metal seat, Material: carbon steel, alloy steel,stainless steel,cast iron/ductile iron with stainless steel/al-bronze disc Wafer/lugged butterfly valve:MSS SP-68 or API609 Flanged butterfly valve:MSS SP-67 Face to face dimension:ANSI B16.10,MSS SP-67,MSS SP-68 or API609 Test: API 598 End flange dimension: ANSI B16.5, MSS SP-44 or API605
Cast steel Wafer/lugged/flanged butterfly valves
Material: carbon steel, alloy steel,stainless steel,cast iron/ductile iron with stainless steel/al-bronze disc,
soft seat or metal seat
Wafer/lugged butterfly valve:MSS SP-68 or API609
Flanged butterfly valve:MSS SP-67
Face to face dimension:ANSI B16.10,MSS SP-67,MSS SP-68 or API609
Test: API 598
End flange dimension: ANSI B16.5, MSS SP-44 or API605