4000 Series Double Flanged Double Eccentric Check Valve To AS4794, 150-1600mm is available at Australian Valve and Filter Industries.
Double Flanged Process Valve | ARI ZETRIX
Double Ball Check Valve - Dashley DDV
Valve - Check Valve
Banlaw Check Valve Receiver
Duckbill Check Valve
Ball Check Valve | TISO
Ball Check Valve | MAXI Check L (MCL)
Goodwin Check Valve - Non-Slam
TISO-Check valve application note
Are you double-handling?
Efco German valve repair and testing equipment
Choosing the right valve for your application
Rack inspections: If in doubt, check it out!
Training video for "multi port valve blocks"
Valve's chemical resistance 'critical' in process control system
Double the performance with Durastreme
Norbar Cushions Refinery Valve Drain from a Hammering
High Accuracy Torque Multiplier for Wet Valve Actuation
Ever wanted to see what is going on inside a valve?