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  1. saleh.na

    casing relief valve in fire pumps

    Hi. Is the Casing relief valve or automatic relief valve(protect pump of overheating) the same as the pressure relief valve in fire pumps? Acc. to NFPA 20 , The automatic relief valve shall have a nominal size of 0.75 in. (19 mm) for pumps with a rated capacity not exceeding 2500 gpm (9462...

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