What is the typical pressure resistance of insulation jacketing?
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Our company uses insulated jacketed pipes; previously, 6 kg of saturated steam was used, which posed a risk of material condensation. I am considering switching to 9 kg of saturated steam – will there be any issues with the pressure resistance of the pipes? What is their typical pressure tolerance?
0.9Mpa is not a big deal; it’s easy to use pipes of this pressure rating. It turns out that whether it can be upgraded to this level depends on the original materials used and the quality of the construction
This pressure poses no problem for jacketed pipes, but it’s hard to say the same for jacketed equipment and jacketed valves. Our unit’s jacket is supposed to use steam at 0.3 MPa, but in practice, a steam pressure of 0.38 MPa is generally used. Needless to say, the equipment has a design pressure; many jacketed valves are specified to withstand only 0.45 MPa of pressure (this has nothing to do with the pressure rating of the valve flanges).
What was said on the 3rd floor is correct; in fact, the wall thickness of pipes represents the part of a piping system with the greatest margin for error. It is the equipment, valves, and similar components that deserve more concern. It is necessary to verify the original design documents to check whether the design pressures of various components exceed the specified limits.