On a booster package, there are copper sensing lines connected directly to the stainless steel headers and cast iron pump casings. Will these dissimilar materials create a problem?
Where dissimilar materials contact each other in a plumbing system, there is a possibility of dielectric currents. This presents a problem when relatively small amounts of iron are in contact with a large amount of copper (as with a stainless steel booster system connected to a copper plumbing system). The reason for this is that the relatively small amount of iron serves as a sacrificial anode for all the charges built up in the copper plumbing system. It is recommended that dielectric isolators be installed between such connections. In the case of sensing lines on a booster system, the amount of copper is small relative to the stainless steel and cast iron. As such, the dielectric currents are low, and corrosion of the stainless steel or cast iron will not be problem. In this case, dielectric isolators become unnecessary.
Related Questions
- On a booster package, there are copper sensing lines connected directly to the stainless steel headers and cast iron pump casings. Will these dissimilar materials create a problem?
- If we supply a booster system with stainless steel headers and it is piped to copper, will there be a galvanic reaction, and if so should we use a dielectric union?
- Can a stainless steel conductor be connected with copper conductor for conductivity?
