Please can you advise on the most suitable material(economical as well) for a cooling water system using sea water for the following system components?
Pipes ?
Valves ?
Pumps ?
Heat exchanger ?
Do I need to allow for any special filtraton systems?
You may want to look ar GRE pipes and fittings, CuNi xalves (or elastomer lined butterfly valves with CuNi discs. Titanium or hastelloy ? plate exchangers. Don't consider 316 at these temperatures
Check valves could be in super duplex. Noreva are supplying to desalination plants in Australia in this material.
With elastomer lined butterfly valves make sure the shaft is in super duplex. Also that there are seals to prevent the fluid getting behind the elastomer lining. The lining shouldbe bonded to the body. Loose fitting linings will allow the water to get behind the seal and corrode the body. The body will expand and jam the valve.
Please review FRP Pipe Failures& Lessons to be learned
Paulin Webinar April 2008
Scope of Webinar:
Experiencebasis forpresent webinarPart
Part 1. Failuresin GRP PipeSystema surveyPart
2. Measures to avoid failures.
The Roleof systemdesign & code compliance if any
Somedetails of SystemDesign by Analysis
Additional information about the Webinar by Paulin Research Group please go to