Passive Groundwater Sampling

Passive Groundwater Sampling: The Proven Alternative to Well Purging

Selecting groundwater sampling technology for any particular application can be challenging, as there is a wide range of technology available on the...
pneumatic pump fitted with a PTFE diaphragm

Getting the Most Out of PTFE Diaphragms

Figure 1: Cutaway view of a pneumatic pump fitted with a PTFE diaphragm. Invented nearly 160 years ago,...
Right Mechanical Seals

Select the Right Mechanical Seals: Part 1 of 3

The intent of this article is to document better and more effective ways to select one of the primary components of process...
Refrigerant System

Advanced Gasket Formulation Helps Refrigerant Systems Keep Their Cool

In the late nineteenth century, Olin J. Garlock devised a better way to seal piston rods in steam engines. Since then sealing...
Mechanical Seal Energy Audits and Their Value

Mechanical Seal Energy Audits and Their Value: Part 4 of 4

In one of the three previous parts this series of articles has dealt with the cost to reheat and/or evaporate flush injection...
Pump and Seal Reliability

Improved Pump and Seal Reliability

The City of Chester, Illinois, was getting only about six months of life out of the mechanical seals in their former non-clog...
two-stage double suction/double suction kerosene pump

Seven Rules for Using Vespel® CR-6100

For the past two decades, pump users have had remarkable success upgrading critically important process pumps with Vespel®, a composite material made...
Tank Farm

Protecting Tank Farms from Corrosion

With asset utilization critical and community and regulatory pressure always looming, it is essential that tank farm owners proactively prevent any loss...

Getting the Most Out of PTFE Diaphragms: Part 2 of 2

There are two grades of PTFE that can be used in the manufacture of diaphragms: conventional (homopolymer) and modified (copolymer). The lowest...
Low Viscosity Fluid Pump

Reliable When Pumping Low Viscosity Fluids

For applications requiring the pumping of low viscosity liquids, avoiding operational problems due to the poor lubricity of these liquids can be...