Chemker 300 chemical resistant vacuum pump, high chemical resistant, maintenance-free, quiet operation and low vibration, direct driven motor, thermal protection device, CE certified, AC230V, max. vacuum -670mmHg, flow rate 18 l/min, motor ratio 1450rpm, 1/8 HP, port thread 5/16 inch (8mm), 20.3x11.2x20.9cm, 5.0kg serial-no.