The main issue here is that most of the relief valves do have the correct pressure class but the text format is incorrect. Most ratings in the spec are listed as CL150 the relief valve has their rating with the text 150LB. Because the rating text is not the same they will not connect. Edit the relief valve to have the same naming convention as the other components. Also MAIN_SIZEs have the same issue some sizes are set to 50 and some are set to 50mm. They also need to match the same naming convention.
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