8:23

The Thayer Problem: Solved

8:38

The History of the Thayer Valve

5:54

Axial Flow Valve Lubrication 101

29:26

Bach Stradivarius Trumpet Valves #1: Band Instrument Repair Detective Series

6:09

Entretien barillet Hagmann

15:08

Sleeve Replacement Session.mpg

19:41

Professor Eric Laithwaite: Motors Big and Small - 1971

14:53

Brass Repair Cam - Bass Trombone Axial Flow Valve Disassembly and Clean (Abi)