PD Pump Fundamentals, Design and Applications (Part Two)

Editor's Note: This is the second in a series of five articles based on the Hydraulic Institute's new Positive Displacement (PD) Pumps: Fundamentals, Design and Applications e-Learning course.

Positive displacement (PD) pumps are used in a myriad of applications across multiple industries. Users have found them to be the solution to many specific pumping challenges; however, due to their size, simplicity and ruggedness, they often are not as well understood as other pump types.

PD Pump Fundamentals, Design and Applications (Part One)

Editor's Note: This is the first in a series of five articles based on the Hydraulic Institute's new Positive Displacement (PD) Pumps: Fundamentals, Design and Applications e-Learning course.

Dry Split Seal a Solution for High-Temperature Mixing Tanks

Use of bearing sleeve material helps the long shaft run true.

Chemical attack is a destructive force in any high-tech manufacturing process. For TIMET’s Las Vegas, Nev., plant, the force was presenting itself during the high temperature mixing of titanium tetrachloride (TiCl4), known in the industry as TiCL.

The Vital Role of Valve Springs in Power Pumps

When calculating maximum speed, power pump valve springs are an under-valued factor.

History tells us that a fellow named Ctesbius built a reciprocating power pump in about 150 B.C. on the Nile1. It sat near the surface of the river, was driven by an undershoot waterwheel and pushed river water into an irrigation system.

The Evolution of Pump Control

Advanced motor protective relays provide superior protection for motors and pumps.

For years, motor overload relays have been used to protect pumping systems. Traditionally, they monitored current to protect the motor and relied on separate electromechanical sensors, such as flow meters or pressure gauges to protect the pump.