•NEMA 4X Style Enclosure•Guided Double Ball Checks•Circuit Voltage Protection•Thermal Overload Protection•Priming / Degassing Valve•LED Indicating Lights•Splash Cover Over Controls•2 Year Warranty.12 GPD at 250 PSI Dosing Pump Precise metering is achieved with guided double ball checks, including foot and injection assemblies. Manual stroke speed of 0-200 strokes per minute provides a wide turn down capability of outputs up to 45 GPD and 300 PSI.