Product Digest
In this issue - PumpsSelf-Priming Peristaltic Pumps Can Operate Dry
The Masterflex P/S line of digital peristaltic pumping systems provides repeatability of 0.1% to maximize productivity in precision chemical feed, batch dispensing, and filling applications. The line covers a wide range of complete systems, which include a standard digital drive, a computerized drive, and a stainless steel National Electrical Manufacturers Association (NEMA) 4X process drive. Turndown ratios of up to 6,000:1 provide users with flexibility in both volume and time of dispensing. The pumps handle flow capacities from 0 to 54 gal/h, and can achieve a flow range of 380,000:1 in one pump head. The pumps are self-priming and able to operate dry. They are suitable for use with most chemicals, and contain no valves or seals. Fluid contacts only the tubing, providing contamination-free pumping.
Appeared In Issue: April 2009
Thermo Fisher Scientific, Inc.
www.thermofisher.com
Torque Limiter Makes Energy Use More Efficient
This torque limiter has been designed to provide horsepower control for mobile and industrial applications of P1/PD series pumps. This option allows the use of smaller, more energy-efficient prime movers. The limiter adjusts flow in the circuit to keep the prime mover from stalling under heavy loads, reducing the maximum horsepower available while handling the same load. Using the pump’s hanger angle, the limiter monitors both pressure and displacement. As pressure rises, flow is reduced according to the zero-adjustment spring rate of the limiter. When pressure reaches its full value, the system’s compensator assumes control.
Appeared In Issue: April 2009
Parker Hannifin Corp.
www.parker.com
System Models Feed-Forward Positive-Displacement Pumps
The UNiGY pump-control system uses mathematical models that manage torque to produce precise flowrates and pressures for high-pressure positive-displacement process pumps. These models continually sense demand and energize the pump only when required. This lowers energy consumption, waste heat generation, and noise.
Appeared In Issue: April 2009
Kadant Inc.
www.kadantunigy.com
Abrasion-Resistant Bushing Material Protects Pumps
Graphlon GM 860 is tough, polymer/graphite-based, abrasion-resistant bushing material that prolongs the life of pump bushings and other critical-wear parts. It provides excellent abrasion resistance in harsh environments, and has been developed specifically for sump pumps and river water service pumps where abrasives are a problem. Traditional pump materials are prone to damage from highly abrasive suspensions, and traditional bushings, including bronzes and plastics, do not adequately handle run-dry situations.
Appeared In Issue: April 2009
Graphite Metallizing Corp.
www.graphalloy.com
Vertical Sump Pumps Operate with Lower Costs
The Model VRS vertical rubber-lined sump pump handles tough slurries in chemical processing, power, and pulp and paper applications. The VRS liners, impeller and casing halves are interchangeable with those of the manufacturer’s SRL horizontal pumps, reducing parts inventory and maintenance costs. Changing the field-replaceable elastomer liners does not require a change of the entire pump casing. The pump’s impellers are built with tighter tolerances than other vertical sump pumps, improving operating efficiency and saving up to 40% in energy costs.
Appeared In Issue: April 2009
ITT Goulds Pumps
www.gouldspumps.com