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omposition Flexible graphite formed Rings Wiper Rings GR8800 Features Valvograph Special is a reliable stem's packing tested for all applications with steam and process fluids. It is composed by rings of pure expanded graphite and with packing in pure P.A.N. graphite. Valvograph Special offers great resistance to the temperature, pressure and gives extreme guarantees in the industrial applications. The product is reach of passive inhibitor of corrosion to guarantee the maximum stem's protection. Applications Stem's packing for industrial valves
| P bar | Ibf/in2 | Vm/S | f/pm | pH | T °C | °F |
| 300 | 4500 | 1 | 200 | 0÷14(3) | -100 ÷ 450(1) / 650(2) | -150 ÷ 840(1) /1200(2) |