Factors affecting the pressure rating of control valves
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Are the flange surfaces of control valves with different pressure ratings the same as the valve stem length?
Generally, they are not the same; if you need them to be identical, you can contact the manufacturer. Different manufacturers will result in different products as well
The low pressure ratings may be the same; it is possible to check the specific standards. 150LB and PN16 are also different. The pressure rating needs to be determined based on temperature and pressure; different pressure ratings result in corresponding changes in flanges, flange spacing, and the valve body itself.
There’s no necessary connection between the two of them, right?