Sure Flow maintains the most extensive line of Check
Valves in the market today. We offer sizes from 2″ to 60″ – ANSI
Class 125, 150 and up to 2500 — in Cast Iron, Carbon Steel,
Stainless Steel and exotic materials, eg. Titanium, Super Duplex
Stainless and Cupro Nickel. Sure Flow Check Valves meet the
following API specifications (American Petroleum Institute ) : API 594: Wafer Check Valve Standard –
materials, design & face to face API 605 (ANSI B16.47) : flange
dimension API 6A: flange dimension & face to face, API 6D:
materials API 598: testing Our check valves also meet the below
listed ANSI specifications (American National Standards Institute ) : ANSI B16.5 : flange dimension ANSI B16.47
: above 24″, flange dimension ANSI B16.34 : materials, wall
thickness Pictured here is a 56-inch rubber lined Check Valve for
an abrasive slurry process.