Gorman Rupp # 12950-021 Bellows Metering Pump

Gorman Rupp Pump 12950-021

Gorman Rupp # 12950-021

Gorman Rupp catalog # 12950-021, Bellows Metering Pump and Motor unit, Standard series, 2-1/2 Inch Bellows. Motor is 39 RPM, 115 Volts.

Price : $ 434.61

Qty :

4 Weeks (0 in stock)

 

Product Information :

The Gorman Rupp Industries (GRI) model # 12950-021 is a Bellows Metering Pump and Motor unit, Standard series, 2-1/2 Inch Bellows, coupled to a 39 RPM, 115 Volt Motor. These pumps have a dry run capability, are self-priming, have no dynamic seals, are corrosion resistant, and have long, maintenance-free operation. The motors are UL recognized and continuous duty rated with a minimum life expectancy of 2000 hours. The standard motor is an open, shaded pole gearmotor. Perpetual running of motor is not recommended. These metering pumps operate on a positive displacement principle, and are designed to displace both corrosive and noncorrosive fluids. Accurate to plus/minus 0.5 percent from stroke to stroke, when pump is set 50 percent to 100 percent of full stroke. Discharge pressure is maintained over the entire flow range of the pump. Poppet valves are used to prevent back flow; and springs are available to provide a positive shutoff, preventing siphoning through the pump in applications where a positive suction head exists. The flow rate of all bellows pumps can be adjusted by modifying the length of the discharge stroke. Adjustments can be made down to 10 percent of full stroke. Adjustment CANNOT be made while pump is operating. An adjusting screw changes the stroke length of an eccentric crank. Note: Best priming and metering accuracy occurs when the stroke length is 50 percent or greater. The maximum temperature for this pump is 140 F.
WEIGHT : The Gorman Rupp 12950-021 weighs 5.5 lbs.

Features :

Motor Specs :
39 RPM, 115 Volts.

Applications

Typical applications for the GRI 12950021 include film and xray 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, and wastewater and water treatment systems. The proprietary blend of materials in these bellows pumps, makes them perfect for applications in the laboratory and analytical instrumentation market, whether using them for fluid metering, sterilizing laboratory and surgical equipment, a critical analytical application, or a simple fluid circulation loop. The Bellows Metering line of pumps were originally engineered to pump chemicals within film processors. Although the film industry has dramatically changed since the first bellows pump, you will still find these Bellows pumps in imaging applications and many other markets throughout the world. Their accurate, longlasting, leakfree, metering capabilities make these pumps uniquely suited for the Printing and Image Reproduction market. Applications in the Printing and Image Reproduction market include highend commercial color digital presses and printers, film processors, silver recovery systems, chemical blenders, printing press metering systems, copiers, and Xray processors. Maximum fluid viscosity is 5,000 centistokes. The poppet valves in this pump can handle fine slurries. Duckbill valves are recommended for heavy slurries or fibrous materials. Heavy slurries should be flushed from the pump before shutdown.

21/2 inch Bellows pumps have these available poppet valve and oring material options X121 / X121 Butyl, X122 / X122 EPDM, X123 / X123 Hydrin, X126 / X126 Viton/FKM, X128 / X128 Silicone, X129 / X129 Nitrile ; and these duckbill valve and oring material options X041 / X041 Butyl, X042 / X042 EPDM, X043 / X043 Hydrin, X046 / X046 Viton/FKM, X048 / X048 Silicone, X049 / X049 Nitrile. Available T code port options T001 T1, T002 T2, T003 T3, T004 T4, T005 T5, T006 T6, T007 T7, T008 T8, T009 T9, T011 T11, T012 T12, T013 T13, T014 T14, T001 T01, T002 T02, T003 T03, T004 T04, T005 T05, T006 T06, T007 T07, T008 T08, T009 T09 ports.