Gear Pump: Why Install A Pressure Reducing Valve?
When the Gear Pump Manufacturers prompts to install a gear pump, the following points should be noted:
When using a gear pump, a pressure relief valve must be installed to protect the pump when the pump is closed or the valve is closed. The PRV can be piped to the suction side of the pump or to the supply tank.
The pump driven by the belt drive has additional protection and if the pump is headless, the belt will slide in the pulley. If the pump is to be driven by a belt, install bearings with heavy-duty radial load carrying capacity. If a drive coupling is used between the motor and the pump, the laser or reverse scale indicator method must be used to precisely align the shaft 0.05 mm (0.002") from the shaft end of the motor to the pump shaft end. Movement, thereby loading the bearing and deforming the shaft as the shaft rotates. The flexible coupling will transfer these loads.
These pumps need to be securely and securely mounted on a sturdy metal base and base. If direct in-line drive through the coupling is used, the entire pump set must be mounted on a sturdy steel frame with the pump foot position flat to within 0.025 (0.001") tolerance
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