The M-600 Dosing pump is designed to inject chemicals into pipeing systems. All models are equipped with a top mounted mechanical flow rate adjustment knob. Optional on/off cycling timers are available. Features: * Double-ball ceramic check valves. * PVDF(Kynar) valve assemblies. * Viton o-rings. * High outlet pressure capability of 125 PSIG. * Easy access, side mounted mechanical feed rate adjustment. * Ball bearing supported motor drive shaft. * Permanently lubricated ball beating motor. * 27: 1 adjustment turn down ratio. * Easy servicing. * Includes suction tube foot valve & strainer, suction tube wewight, suction tubing, discharge tubing and injection fitting with internal back-flow check valve and mounting hardware.