For ball valve seat material selection can someone advise if there is a selection criteria to allow one to assess the acceptability of coatings for erosion resistance such as RTFE for given concentration of particulates in a fluid that the valve or material may be exposed to.
Specifically to be able to define what is "sandy service" and what isn't.
eg. Is this.
Quantified sand concentration with particle sizes greater than a certain diameter.
Percentage volume sand with particles size greater than certain diameter in a fluid .
"sandy" is this simply sand or covers any solid . .
Specifically to be able to define what is "sandy service" and what isn't.
eg. Is this.
Quantified sand concentration with particle sizes greater than a certain diameter.
Percentage volume sand with particles size greater than certain diameter in a fluid .
"sandy" is this simply sand or covers any solid . .