The René Hagmann® "Free-Flow Valve" :
The reasons behind a succes story.
Since its introduction in 1990, the René Hagmann Free Flow Valve has enjoyed, season after season, a flourishing success, and has now become a standard. We are pleased to raise a toast to the 10,000th valve leaving our workshop!
When most players embraced our simple yet efficient concept, it most of times occurred after comparing it with what direct competition had to offer. Most leading manufacturers and top artisans seem to appreciate what is underlined below:
- A well balanced flow in all registers, thanks to the adequate distribution of the air column deviation into the valve.
- A homogenous feel and a great ease of playing the musician can immediately spot, since the Free Flow Valve has no negative influence on the intrinsic trombone sound quality whatsoever.
- The unique design, which idea is the continuance of the tubing course. It is in fact an “air shift”, which action can be observed when rotating the valve after having removed the engraved cap: the air flow is naturally deviated thru soft curved segments identical to the instrument’s own tubing. Unlike traditional valves, our inside rotor is hollow, and therefore lightweight. We tend to believe this is the state-of-the art.
- The ergonomic, the reliable and noise free action, the trouble proof and easy maintenance of the valve itself, combined with the available choices in terms of levers, bores (ranging from small bore tenor, to symphonic tenor, bass, contrabass and Cimbasso), seem to have sold many professionals to our concept.
And more:
- We believe our valve is the only one on the market combining easy lubricating and maintenance.
- Our three ways (full bore) ducts concept allows to separate both concerned registers, which is not feasible with the two ways ducts system from all competitors (Thayer, Geenhoe, Kanstul, Hulot, Rotax and conventional valves suppliers).
In order to meet each specific demand, our R&D department has developed an exhaustive program to convert instruments from all brands (our new designed Progressive Bore dedicated to the bass trombone being our latest development).
Made out of solid bronze, our scavenged inside rotor is lightweight. His tempered stainless steel small diameter spindle is led thru significant length, favorable to great performance and insignificant wear.
Each valve is hand made, and bears an identification serial number. It is lapped and controlled individually, and its vacuumed control is 100% guaranteed.