AWS no.: 5134870 T-Rotor 216 HWM Trochoidal pump for cooling water with adapter Replacement of the NOP trochoidal pump at 1500 rpm (50 Hz) 24.3 litres up to 30 bar At 1800 rpm (60 Hz) 29.1 litres up to 30 bar The pressure depends on the power of the motor.