You can determine pipe size byusing the sizing guides at the bottom of this page (a sizing chartis shownatthetopofeachpipeandpipefittingpage).However,forthemost accurate sizing, use a sizing gauge or kit (sold separately at right).Most straight (parallel) threads are measured the same way astapered threads.
The first Head of Ravenclaw House was the famous co-founder of Hogwarts, Rowena Ravenclaw, and the only other known Head of House was Filius Flitwick. As no Ravenclaw students are known to have returned to Hogwarts to teach, it is unknown who the next Head of House will be. 1  Rowena Ravenclaw - One of the four Hogwarts founders and founder of the Ravenclaw House.  Filius Flitwick - Head of Ravenclaw during Harry Potter's time at Hogwarts.
Season 1. Raven was forced to work with Ben for the science project by Ms. DePaulo and tried to cleanse him at every chance she got, only to realize his hygene was his own business, and she shouldn't have tried to change him. Later, Raven helped Chelsea campaign against Ben for school president.In the end, Ben won the election.Raven later agreed to go with Ben to the dance before accepting an invitation from Gabriel. Raven tried to go back and forth between them, but in the end decided to tell Ben the truth.ater, Raven helped Chelsea campaign against Ben for school president. In the end, Ben won the election. Raven later agreed to go with Ben to the dance before accepting an invitation from Gabriel. Raven tried to go back and forth between them, but in the end decided to tell Ben the truth.