Mechanical resistance :
Property |
Definition |
|
No specific resistance |
Application for unfilled or non-abrasive media. |
|
Increased resistance |
Application for slightly abrasive media. Parts are made of hardened materials. |
|
Wear resistant |
Application for abrasive media. Parts are made of hard metal or have coated surfaces. |
Chemical resistance metals :
Property |
Definition |
|
No specific resistance |
Application for non-aggressive or non-acidic media (pH value 5-9). Parts of the valve are made of aluminum or steel. |
|
Increased resistance |
Application for aggressive media (pH value 4-10). Parts of the valve are made of A2 grade stainless steel. |
|
Stainless |
Application for aggressive media (pH value 0-14). Parts of the valve are made of stainless steel in A4 quality. |
Chemical resistance non-metals :
Property |
Definition |
|
No specific resistance |
Application for non-aggressive or non-acidic media (pH value 5-9). Parts are made of e.g. FPM, NBR. |
|
Increased resistance |
Application for aggressive media (pH value 3-12). Parts are e.g. made of Turcon, Zurcon. |
|
High resistance |
Application for aggressive media (pH value 0-14). Parts are e.g. made of PTFE, FFPM. |
|
EPDM |
Application for aggressive media (pH value 5-14), greases and mineral oils excluded. |