The Standard Bellows Metering Pumps operate on a positive displacement principle. The rotation of the motor shaft is transmitted into an up and down motion through a lever pivot crank mechanism. This motion provides a continuous compression and expansion force on a bellows module, forcing fluid in and out of the module. Discharge pressure is maintained over the entire flow range of the pump.
Standard Bellows Metering Pumps are designed to displace both corrosive and non-corrosive fluids. Accurate to ± 0.5% from stroke to stroke, when pump is set 50% to 100% of full stroke. Discharge pressure is maintained over the entire flow range of the pump. Poppet valves are used to prevent backflow; and springs are available to provide a positive shutoff, preventing siphoning through the pump in applications where a positive suction head exists.
Bellows pumps utilize GRI’s proven proprietary blend of polypropylene materials to provide an accurate and economical, long-lasting metering pump. A wide selection of valve and O-Ring elastomers produce chemical resistance pumps capable of handling both corrosive and non-corrosive fluids.
Applications include, but not limited to:
Film and x-ray processors
Silver recovery systems
Wafer and silicon chip washers and processors
Detergent dispensers
Blood analyzing equipment
Industrial floor scrubbers
Thermo therapy equipment
Waste removal systems
Wastewater and water treatment systems