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Resistance

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.

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