RogerF
Mechanical
- Oct 7, 2002
- 11
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?
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?
