Steam pipeline gasket issues
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Steam pipeline, design pressure 4.0 MPa(G), design temperature 450°C. Is it feasible to use a wound gasket with inner and outer rings, made of material 2222 – that is, with a 304 metal component and flexible graphite as the filling material?
What is the type of flange sealing surface? Flange type, bolt grade?
Based on the parameters you provided, it is recommended to use non-metallic gaskets made of high-temperature mica composite sheets.
According to HG/T20610-2009, this standard applies to wound gaskets for steel pipe flanges with a nominal pressure of PN16–PN160. Type D (with inner ring and centering ring) is suitable for convex surfaces as well as fully flat surfaces; the flexible graphite filler can be used within a temperature range of -200°C to 650°C. It’s better to check the relevant gasket standards; such requirements are always specified in them.
It should be possible; asking the manufacturer of the winding gasket for the operating conditions will clear things up
It’s best to use a wavy tooth pad, 600 pounds capacity
Is 2222 made of 316 material? Gasketing tape is not as good as wave-patterned gaskets
That’s great. I use graphite gasket inserts, which are then wrapped from the inside and outside
Hello, apologies for the delayed response. The flange is of ASME B16.5 standard, with DN50 dimensions, WN-RF design, Class 600 rating, and made from A182 Gr.F22 with Cl.3 strength; the fasteners are fully threaded studs and nuts, made from 35CrMo material