Eng-Tips is the largest engineering community on the Internet
Intelligent Work Forums for Engineering Professionals
looking for duocheck valve
- Thread starter Henry07
- Start date
Henry07,
The former TRW Mission Duo-chek valves are now part of Crane Valves.
The former TRW Mission Duo-chek valves are now part of Crane Valves.
I would be loathe to use a valve of this type on sea water service without a thorough evaluation of materials and dynamic behaviour.
I have experienced spring & pin failures in sea waater. On one gas platform one half of the disc disappeared. Check out the nuclear regulatory reports of failures of this type of valve. Corrosion can occur in stagnant areas even with super duplex materials.
In desalination plants we specify super duplex annulus type check valves from Noreva or equivalent.
Check out Fluid Transients in Pipeline Systems by ARD Thorley and also Delft laboratories re dynamic behaviour of check valves and how poorly these perform without strong springs. Of course heavy springs increase head loss
Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng
I have experienced spring & pin failures in sea waater. On one gas platform one half of the disc disappeared. Check out the nuclear regulatory reports of failures of this type of valve. Corrosion can occur in stagnant areas even with super duplex materials.
In desalination plants we specify super duplex annulus type check valves from Noreva or equivalent.
Check out Fluid Transients in Pipeline Systems by ARD Thorley and also Delft laboratories re dynamic behaviour of check valves and how poorly these perform without strong springs. Of course heavy springs increase head loss
Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng
- Status
