Thank you very much for the discussions you have made but the standard requires that the device be used to prevent the temperature rise in closed-circuit mode that means no pump discharge outlet.
4.13 Circulation Relief Valve.
4.13.1 General Requirements.
4.13.1.1* Where an electric variable...
No,this is not problem., each pump(s) shall have an automatic relief valve listed for pump service installed and set below the shutoff pressure at minimum expected suction pressure.The valve shall provide sufficient water flow to prevent the pump from overheating when operating with no...
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...
