What is a Dishwasher High Loop?

A high loop is where the dishwasher drain hose is elevated as high as possible underneath the kitchen sink in order to prevent dirty water in the sink or garbage disposal from being sucked or siphoned back into the dishwasher and possibly contaminating your clean dishes.

What is CSST?

Corrugated Stainless Steel Tubing (CSST) is a flexible, stainless steel pipe that is used to supply natural gas in residential, commercial and industrial structures.

What is an Air Admittance Valve?

An Air Admittance Valve is a one-way vent that is normally closed but opens to allow air to be drawn in when there is a negative pressure (a suction or vacuum) in the drain line.

All About S Traps

An S trap is a drain trap that looks like a letter “S” sitting on its side. The plumbing systems in most older homes used S traps on the drain lines under sinks, but S traps are now prohibited by code throughout the country because they are not vented.