Energized Expanded Mineral Graphite with Nickel N foil.
The Valvograph V48EN graphite sealing ring gaskets for valves, thanks to their variable specific density, offer an optimal combination of compressibility and strength, adapting to the different pressure requirements of industrial applications. The density can be adjusted to the customer's requirements, if technically feasible. Their construction with pure energized expanded graphite provides greater resilience and reliability.
These graphite rings are ideal for sealing industrial valves in services compatible with graphite. Thanks to their high thermal and chemical resistance, they are suitable for a wide range of industrial applications that require reliable performance and optimal sealing.
Typical properties of the Valvograph rings Style V48EN | Units | Value |
---|---|---|
Density | g/cm³ | 1.45 ÷ 1.70 |
Ash content | % | ≤ 1 |
Carbon content | % | ≥ 99 |
Chloride content | ppm | ≤ 10 |
Fluoride content | ppm | ≤ 10 |
Halogen content | ppm | ≤ 40 |
Sulfur content | ppm | < 300 |
Oxidation rate at 670°C | % | < 4 |
Oxidation inhibitor | - | Y |
Passive corrosion inhibitor | - | Y |
Metal reinforcement (others available on demand) | - | Nickel N |
Dimensions | mm | 10 ÷ 2300 |
Tollerances (mm) | Out. D. | Inn. D. | Th. | Wall | Bulk Density |
---|---|---|---|---|---|
up to 250 mm | [-0,20 ÷ 0,00] | [-0,00 ÷ 0,20] | +/- 0,20 | [-0,20 ÷ 0,00] | +/- 5,00% |
from 251 to 500 mm | [-0,25 ÷ 0,00] | [-0,00 ÷ 0,25] | +/- 0,20 | [-0,25 ÷ 0,00] | +/- 5,00% |
from 501 to 750 mm | [-0,30 ÷ 0,00] | [-0,00 ÷ 0,30] | +/- 0,25 | [-0,30 ÷ 0,00] | +/- 5,00% |
from 751 to 2300 mm | [-0,40 ÷ 0,00] | [-0,00 ÷ 0,40] | +/- 0,75 | [-0,40 ÷ 0,00] | +/- 7,00% |