Different valve types

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CooperBayliff
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Different valve types

Post by CooperBayliff »

Ive seen some people talk about MAW valves and me personally ive ever just know rotary or piston so whats the difference with the different types of valves? Which ones are better? Also what is the PVAK system
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royjohn
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Re: Different valve types

Post by royjohn »

You should do a little research before asking here. A click or two on google will lead you to Martin Wilk's site...he is the inventor of the MAW valve. This valve takes some of the bumps out of a typical piston valve. According to Wilk:

What would happen if you combined the best aspects of both pistons and rotors in one valve?

Pistons have a direct stroke and a great feel in the hand. There is no change of motion in any type of linkage system, and maintenance is quite simple.
Rotors have extremely uniform windways inside. They are great for all types of music, including legato passages, and valved notes tend to play as well as open tones.

Building upon these great characteristics, the MAW Valve goes one step further. Many prior pistons, compromised by manufacturing irregularities (bumps) in the windways, are inherently distortive. Bumps alter sound waves. To avoid this, the MAW Valve opens the middle windway to create a smooth rotor-like passage. Both of the windways above and below this middle passage are now smooth and round inside the MAW Valve.

The geometry of the patented MAW Valve advances the playing characteristics of a horn. With the MAW Valve, sound waves traveling through the instrument are less disrupted. Playing is easier. There is a fuller sound with less effort. Notes tend to be more stable with increased clarity. The MAW valve combines the best qualities of pistons and rotors.

The MAW Valve is ready for you to try.
Test for yourself.
See for yourself.
Hear the difference.
Ready to Drop In and Play

The replacement MAW Valve is designed for quick and easy transition. A set of MAW Valves will fit certain common configurations and sizes of tubas and trumpets, often with no lapping or other adjustments necessary. To find out if the MAW Valve will fit your horn, contact us or call 812-364-6421. And please stop by to try the valves for yourself!
Purchase a Set of MAW Valves

To purchase a set of MAW Valves, contact us or call 812-364-6421.
MAW Valves for Trumpet

Set of 3, including valve stems and guides, and shipping within US: $750 USD
MAW Valves for Tuba

Set of 4, including valve stems and guides, and shipping within US: $1,250 USD
Evolutionary
Advantages of the MAW Valve

Improves note stability, legato passages, staccato attacks
Increases clarity
Makes playing easier
Centers notes with precision
Allows you to produce more sound with less effort
Patented in the United States (US Patent 8227677) (corresponding international patents pending)

This from Wilk's site, <https://www.mawvalve.com/mawvalve.htm>
royjohn
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