S.E. Shires bass trombones and .525 and .547 bore tenor trombones are available with the choice of three different valves: the S.E. Shires TruBore Valve (U.S. Patent 7112735), the S.E. Shires Rotary Valve or S.E. Shires Axial Flow Valve.
Because an airtight valve is essential to the response and centered feel of the instrument in all registers and many valve options on the market do not meet Shires pressure-test standards, they choose to produce all of their valves in-house. S.E.Shires thoroughly test for accurate tolerances and perfect action at every stage of manufacture. Double-valve bass trombones can be ordered with either inline or dependent valve configurations.
The S.E. Shires TruBore Valve is Steve Shires own design, a valve that captures many of the free-blowing, evenly responding characteristics of a straight trombone, with an amazingly continuous response between the open and engaged positions.
The S.E. Shires Rotary Valve is a superior version of the traditional rotary valve design, maintaining the size and shape of the tubing through the valve ports. Many players choose the S.E. Shires Rotary Valve for its secure feel and light, quick action.
The S.E. Shires Axial Flow Valve is constructed of nickel-plated brass in a brass casing. The Axial Flow Valve has the most open feel and sound of any valve on the market today.
A gooseneck, interchangeable with the valve section, can be ordered to convert any tenor or bass trombone to a straight trombone.
When ordering online, plrase mention in coments section during check out, which type of valve section is wanted.