CD Industrial Group Inc.
Simulations and Hands-on Learning Challenges

Newsletters That Teach

Counterbalance Valves, Part II
Hydraulic - Jul 6, 2009

This edition of Newsletters That Teach compares the motion control function of a counterbalance valve to that of a pilot operated check valve when used as a load lock.

Counterbalance Valves Part I
Hydraulic - Jun 25, 2009

In this edition of Newsletters that Teach we will cover the basic function of a counterbalance valve. Counterbalance valves are also often referred to as motion control valves and over-center valves. All three names address the important function of these valves.They are deployed in applications where hydraulic cylinders or motors are working against gravity in one direction, and with gravity (sometimes called a negative load) in the other direction.

Hydraulic Solenoid Valve Failure
Electrical - Jun 11, 2009

You know the story. The operator has reported that a hydraulic solenoid valve is not operating. Whose problem is it - the electrician’s or the millwright’s?

In this edition of Newsletters that Teach we'll discuss how a maintenance team can take a few extra steps to determine whether the problem is electrical or mechanical.

Direct Acting Relief Valves
Hydraulic - Feb 6, 2009

Happy New Year, and welcome to our next newsletter installment! The topic in the next few editions of Newsletters That Teach is pressure valves. We'll show you how to identify them correctly on your schematics and understand the valve's basic functioning.