Introduction of Rotary Displacement Pump
Screw, vane and gear pumps are examples of rotary displacement pumps. All types of rotary pumps continue to force liquid into the system regardless of the opposition to the transfer. Due to this reason, additional protection to these pumps is required or else the pump will continue to build up pressure and finally lead to rupture or damage to the pump. To avoid this, relief valves are fitted in the pumps. These relief valves are capable of bypassing entire throughput of the pump. Rotary pumps are highly sensitive pumps and therefore special care is needed in order to prevent any abrasive material from entering the pump which can damage the helices and clearances in the pump. The starting procedure of rotary displacement pumps is similar to that for the reciprocating displacement pump.
