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Featured Articles

Flexible screw conveyor moves cat litter pellets gently

Screw self-centers within tube, proving clearance and limiting product damage
Cat litter is usually made from sodium bentonite clay, a material that is relatively inexpensive and highly absorbent, but obtained by environmentally controversial strip mining.
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Protect VFD-actuated motors from electrical bearing damage

Bearing seals only keep away the dirt, while stray voltage and current injury persists
Until the day comes when all motors have built-in bearing protection, maintenance people and motor-repair shops will forever be replacing damaged bearings, so the common wisdom says.
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Instrument chemical tanks to protect our water

Leaking or overfilled tanks can cause environmental problems, contaminate drinking water and cost a company millions of dollars
Our water supply is in jeopardy of contamination from storage- and processing-tank leaks and overfills at chemical, petroleum and water/wastewater facilities.
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Valveless methanol metering for effluent denitrification

Rotating and reciprocation piston accomplishes both pumping and valving functions
Releases of wastewater effluent with high nitrogen concentrations into bays and watersheds are of great environmental concern, as they can have a devastating effect on water ecosystems.
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Three brief examples of a total-systems approach

Suppliers expert in liquid/solid separation, biological treatment and by-product handling
A total-systems approach (TSA) to wastewater treatment is most often associated with a fully integrated solution — one that includes all the puzzle pieces rather than uncoordinated systems and components.
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A sustainability check-list for food & beverage makers

Technology solutions cut chemicals use and blow-down rates; increase brine reclaim and grey water reuse
Water and energy use decisions in food & beverage plants are often taken in the context of larger corporate-sustainability goals.
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What’s the Difference Between a $50 and $500 Ultrasonic Level Sensor?

Ultrasonic level sensors come in a wide variety of sizes and prices. It all depends what your application will be and what your needs are.
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Magnetic flowmeters applied at US petroleum reserve

Divers work at depth of 40 feet below surface to insert flowmeter sensor
Magnetic flowmeters on two rugged Texas brine disposal lines supporting the U.S. Strategic Petroleum Reserve were recently tested to confirm their accuracy, performance and reliability.
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Consider air seals instead of packing

Dependable, adjustable fix doesn’t need periodic tightening or much maintenance
Packing is likely the oldest means ever devised to seal a rotating shaft. It’s still widely used on pumps, agitators, mixers, conveyors and other equipment.
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Impeller selection depends on non-Newtonian fluids’ mixing intricacies

Unique impellers for viscosities too low for helical ribbon impellers, too high for turbines or hydrofoils
Most viscous fluids processed in industry are non-Newtonian, i.e., their viscosities are dependent on the shear rates exerted on them by agitator impellers or their velocities flowing through pipes.
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