How a solenoid coil works

A solenoid is a coil of wire which wraps around a piston type of device. When a solenoid is energized, a magnetic field is created when current is applied and the piston (plunger) of the mechanism lifts off the port in the valve assembly- which results in the valve opening.

When the power is shut off to the solenoid the electromagnetic field dissipates and the plunger assembly seats back down over the port and the valve shuts down.

Is El Niño for real this time?

I don’t know about you, but if I got a nickel for every time I have heard someone say that El Niño is occurring, I would seriously be a rich man. 

This has led me to do a little digging into the truth behind El Niño, and if it is really occurring and going to produce much needed rainfall in California. 

A catch can test is only one of the tests we perform when we conduct a water audit. Many Superintendents and Grounds Managers have the misconception that a water audit consists solely of performing a catch can test. Some think an inventory audit is part of a water audit. An audit can include many elements and is subjective so it's important to understand what specific services an auditor is offering.  If you are looking only for catch can tests then have a specific reason for that service only. A catch can test can can serve several purposes including: