Description
| Unsuitable fluids | Strong acid, strong alkali, and various solvents, inflammable gas, gas susceptible to burn and toxic gas |
| Applications | Pipe flanges, valve bonnets and other equipment used in various industries including oil refineries, chemical industries and shipyards |
| Dimensions | Width × Length (mm): 1270 × 1270、1270 × 3810、2540 × 3810、3048 × 3810 Thickness (mm): 0.4、0.5、0.8、1.0、1.5、2.0、3.0 Color type: blue Print color: black |
Design Data
- Recommended tightening stress
Tightening stress is defined as the pressure required under standard conditions without consideration to the opening force due to internal fluid.Fluid Recommended tightening stress (MPa) Liquid 25.5 Gas 40.0 - Available ranges
Temperature and pressure classifications show individual service limits.VALQUA No. Temperature (°C) Pressure (MPa) Water based Oil based(2) Gas 6500 / 6500AC -50～183 3.0 3.0 1.0 6502 / 6503 / 6503AC -50～214 3.0 3.0 1.0 Notes:
(1) For service conditions exceeding 100°C, please consult us.
(2) Regarding oil gas, solvent and corrosive fluid, separate consultation is required.
- m,y values
The m, y values for Compressed Fiber Sheets defined in Appendix G of JIS B 8265 can be applied to the m, y values of Compressed Non-Asbestos Fiber Sheets.Thickness
(mm)Gasket factor
“m”Minimum design seating stress
“y”(N/mm2)3.0 2.00 11.0 1.5 2.75 25.5 1.0 3.50 44.8
