About the pressure rating and installation of flanges
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Flanges with different pressure levels have different numbers and spacing of bolts. So, how to ensure that the flange of the valve and the bolts of the flange on the pipe can be aligned during installation? My appearance is professional.
Please specify standard specifications when ordering. When entrusting the design, a list of implementation standards is required.
Just know the caliber and pressure of the valve and match the corresponding caliber and pressure flange.
Different pressure levels cannot be connected, but flanges under different standard systems, some of which are similar, can be connected. For example, CL150 and PN1.6 can be connected together, but the actual pressures are different.
The design standards are the same, and they can all correspond to DE
This post was last edited by zjq1962 on 2019-12-24 13:48 Are you sure the flanges of these two systems can be paired with each other? The above table is PN series, pressure level PN16, the table below is Class series, pressure level 150
Just indicate it when making the request. Which standard should it be followed? What stress level? What is the form of the sealing surface? If you write clearly, you will generally not make mistakes. Everyone follows the standards!
The bolt holes of valves and flanges are generally evenly distributed across the span, and plumbers should know this when installing.
Pay attention to try to use flanges of the same standard and specifications to match.