valve body material for salty water

[farhad2474]

Hi
Please tell me, We have salty water for our fire fighting network. The pressure is 130 psi and temperature is 30C. we have to kind of gate valve material body .one is Ductile iron and another is Cast Iron and both of them have epoxy coated (inside and outside) .just I want to know which one have more corrosion resistance against the salty water in case damage come to Epoxy coated body of valve .
Thank you
farhad

 

[EdStainless]

Neither has much at all. In seawater systems you tend to find nickle aluminum bronze, copper nickle, and high alloy stainless steels.

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Plymouth Tube

 

[farhad2474]

Hi
thank you very much plymouth tube

 

[strider6]

farhad

have a look at this paper form copper.org, there is a chap on valves mat selection.

http://www.copper.org/applications/cuni/txt_materials_selection.html

Material Selection Seawater

hope this help

Vitt


Corrosion & Rust Prevention Control