I need a diagram of vacuum breaker and/or air gap

Hello Kzaki

You could have 'googled' this easily : have a look here (http://books.google.nl/books?id=9UQW6vtrsPQC&pg=PA76&lpg=PA76&dq=vacuum+breaker+air+gap&source=bl&ots=dp9BXfOhNE&sig=XKibVUquIWjiStUwjsehDXBQ4NE&hl=en&ei=GjepSbiKFsLM-AbSibnFAg&sa=X&oi=book_result&resnum=2&ct=result#PPA80,M1)

Those are not the same thing. Can you tell us exactly what you are doing? Air Gaps for dishwashers and water softeners (http://www.plumbingsupply.com/airgap.html) Sarnian, Google sometimes takes you where you don't want to go. Your link is not the kind of air gap this person wants.