FOB stands for froth on beer or foam on beer. These devices are used to eliminate waste associated with long draw remote systems. Each time a keg empties the device prevents the beer from from vacating the line between the FOB (located near the keg) and the faucet. They can pay for themselves within months based on the volume dispensed.
As to an estimate on a system, we can put you in touch with an certified installer who can consult with you on best practises to assure the best presentation of draught beer to your customer. This is critical as draught is a very profitable item and you want to encourage resale. Do not settle for just any system. This decision may make a difference between acheiving the above and pour cost.
Scott Zuhse, Instructor
Micro Matic Dispense Institute