Metering Pumps

• The metering pump is a positive displacement chemical dosing device with the ability to vary capacity manually or automatically as process conditions require. 
• It features a high level of repetitive accuracy and is capable of pumping a wide range of chemicals including acids, bases, corrosives or viscous liquids and slurries. 
• The pumping action is developed by a reciprocating piston which is either in direct contact with the process fluid, or is shielded from the fluid by a diaphragm. 
• Diaphragms are actuated by hydraulic fluid between the piston and the diaphragm. Metering pumps are generally used in applications where one or more of the following conditions exist - Low flow rates in ml/hr or GPH are required; High system pressure exists; High accuracy feed rate is demanded; Dosing is controlled by computer, microprocessor, DCS, PLC, or flow proportioning; Corrosive, hazardous, or high temperature fluids are handled; and Viscous fluids or slurries need to be pumped.