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The difference on FTPE and Viton + valve question

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RogerF

RogerF

Mechanical
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Oct 7, 2002
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I have some valves that will be placed in pipes with following service:
Lemon acid, base (type caustic soda) and biocide.

1.
In the valve data cheet, they say that PTFE shall be used as sealing material in the valve. The supplier offers VITON.
2.
It also says that the stuffing box shall consist of expanded graphite not less than 98 % purity.
The supplier offers: TFE + 25% C. Graphite

Is there anyone that knows if I can accept this or do I have to correct the valves?

Is there someone who know what the difference is between FTPR and VITON?
 
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Generally, and in layman words, Viton is the same PTFE but in rubber world.When we need PTFE together with elasticity, we choose Viton.

Hope this help
 
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