The standard filter element is copper gauze with a large surface area to trap particles and oil vapors. Other filter elements are available for especially difficult environments. Each of the two size traps is offered with 2 types of connections to serve both the older hose connector models (mostly belt driven pumps) and the newer flange connector models (mostly direct drive pumps). All VIT's are furnished with ¾" hose termination on the system side. ISO/QF/NW flange connector models are equipped on the pump side with NW adapters, clamps, centering rings and an NW elbow is available for use as a standoff for easy connection.

There are like a ton of options for filter media to be considered in this type of filter.  Often problems and solutions to those problems are what drives filter media type.   We can go down to 1 micron on particulate filters although typical filters come in around 10 micron.