What material flange gasket is better on the steam pipe?
Answer two: I think there is a problem of flange pressure rating is not high enough to design such as 150LB standard commonly used on soft flat gaskets, pressure rating of more than 300LB to recommend the use of metal winding pads I very strange, because the wound pad cheap?? Flange bolt torque low level is low and the corresponding metal winding pads need enough pressure to achieve the sealing effect, there is a low level of flange used to seal the torque, or not enough preload force is not up to the general effect of the former, or to recommend the use of inorganic fiber gasket, metal wound gasket......
Answer four: I think that can be considered the nature of projects, many can choose the type of gasket, metal gasket, asbestos free and can choose the graphite graphite spiral wound, high temperature 520 degrees, non asbestos high temperature of 200 degrees, so the PTFE temperature of 260 degrees, and you choose. But in China there is a civil also has asbestos board, the sealing effect can also. So I think the design should be based on what the design is gasket, what is the gasket?.Answer five: less than 0.7MPa steam pipe operation pressure and temperature are not very high, according to the design requirements can use asbestos gasket, but asbestos gasket and water easily stick to the flange, to replace the cushion cause trouble. It is recommended that you use asbestos coating pads or graphite pads on the asbestos pads, so that gaskets can be easily replaced.
I hope it doesn't work as a metal.Answer three: metal coil gasket Y value is 10000psi, non-metallic flat gasket Y value is generally between 1500-4000psi. So, not all flanges can be optionally changed into metal wound gaskets. But can we recommend metal serated gasket, such as metal serrated gasket GARLOCK Y value is only 1000PSI, so the use of non metallic gaskets can be used where basic metal serrated gasket, and the sealing performance of metal serated gasket spiral wound gasket is much better than.
