I'm new to this and I'm getting involved with Fire Testing some butterfly valves and have a point of clarification that hopefully someone with more experience could guide me. We will be testing Ferritic (CS) butterfly valves and need some guidance as to the coverage this provides.
Reading...
Sorry ASTM B148 C95800. No haven't looked at microstructure, as the castings are out in the field at the moment. What we have under the chemical requirements of C95800
Iron - should be 3.5 to 4.5, actual 4.1
Nickel -m should be 4.0 to 5.0, actual 4.0
I believe the requirement of the above standard is that iron content shall not exceed the nickel content, what i ask is, if for some reason the iron content did exceed the nickel what would the implications be for material performance in terms of corrosion resistance, for example.
Does this...
I am looking for some help with the use of Aluminium Bronze valve discs in Chlorinated Swimming pool water. We are currently experiencing a build of Calcium on the valve disc. Not a corrosion issue just a build up of calcium on the valve disc. See attachment.
The values of the chlorine is...
Does anyone have experience with either of the following materials in Marine / Seawater service.
ASTM B26 Alloy 356.0 T6 and ASTM B26 Alloy 713.
I believe that the former is OK for these services but believe that the latter whilst good for machining due to its high Zinc content is not good in...
It was in a data sheet for Control Valves there was no legend. After some ferreting about I think I have located what it means although someone can correct me if i'm wrong. I believe it stands for Metric Tonnes per Day.
We have firetested a Carbon Steel valve to the above std. My belief is that testing this valve ONLY qualifies us for valves as listed in ASME B16.34 Group 1 of Table 1. The problem we have is that we have a contract where have supplied Duplex Steel Valves as tested to API607, if my understanding...
