Valve Venting

talcito · 11-14-2006, 03:33 PM

What are the advantages/disadvantages of having valves vented?

gchun · 11-14-2006, 07:22 PM

Advantage: You can move your slides without pressing down the valves to release the compression.

Disadvantage: Your slides can fall off your horn without pressing down the valves as there is no compression in the "open horn" (no valves down) state.

Garry

rowuk · 11-15-2006, 11:42 AM

This is being done in Germany too with rotary trumpets. The reason given: no pressure build up when moving the slides. You don't get that "burst" of air or suction against your chops when moving the valve slides before using the valve.
Whether or not anyone really had trouble with this before, I don't know. It doesn't cost extra and it does change something in a predictable way. At least it doesn't change the intonation or playability of the horn like other "custom" devices!

Dan Millheim · 12-15-2006, 11:20 AM

They tend to deal better with internal conflict and anger issues then "un vented" valves, ha. Sorry, it's my day off and I have nothing better to do with my time.

Trumpet Dad · 06-30-2008, 10:14 AM

Does anyone else have any thoughts on this topic? I'm debating whether to get the valves vented on the new Stradivarius I'm planning to win from Dillon's.

I bought my son a 2'nd hand Kanstul last year. The previous owner had the vales vented along with a precision valve alignment (good purchase for $1,000). The trumpet sounds great and my son likes the benefit of not having to depress the 3'rd valve to move the slide. But what are the negatives? Surely there must be some sort of trade-off otherwise the manufacturers would be offering this as standard equipment--right?

The Kanstul has stops on the 1'st and 3'rd slides so we don't have to worry about the slides falling out. I don't know about the Strad.

MJ · 06-30-2008, 11:13 AM

I have the third valve on my Bb vented. Makes some things a lot easier. Makes plunger / quick mute changes a pain in the ass sometimes.

Trumpet guy · 07-02-2008, 12:20 AM

strad has 3rd slide stops

what exactly is venting? what do they do to de-pressurize the valve chambers?

Puukka · 07-02-2008, 03:30 AM

Some B&S (MBX, DBX,...) have the venting (small hole at the valves) at the first and third slide.
I didn´t like it at all, the first one was gone every moment.
It got loose in the Gig Bag and I had to take it veeery carefully out of the bag.
If the stopping mechanism of the third one is a screw, the third one also can fly away easily, if the screw wasn´t tightend before.

Herbert

Trumpet Dad · 07-02-2008, 04:43 AM

Quote:

Originally Posted by Trumpet guy

strad has 3rd slide stops

what exactly is venting? what do they do to de-pressurize the valve chambers?

My trumpet has a small hole drilled into the side of the piston. The hole lines up with the tubing on the 3'rd slide so that the pressure difference within the slide can vent through the piston and out the bottom. This allows you to extend/retract the 3'rd slide easily without having to depress the 3'rd valve.

Trumpet guy · 07-02-2008, 12:50 PM

A HOLE? That sounds like it doesn't look good.

11-14-2006, 03:33 PM	#1 (permalink)
talcito Piano User Join Date: Feb 2004 Posts: 300	Valve Venting What are the advantages/disadvantages of having valves vented?

11-15-2006, 11:42 AM	#3 (permalink)
rowuk Moderator Fortissimo User Join Date: Jun 2006 Location: Germany Posts: 4,228	This is being done in Germany too with rotary trumpets. The reason given: no pressure build up when moving the slides. You don't get that "burst" of air or suction against your chops when moving the valve slides before using the valve. Whether or not anyone really had trouble with this before, I don't know. It doesn't cost extra and it does change something in a predictable way. At least it doesn't change the intonation or playability of the horn like other "custom" devices! __________________ Whenever I feel blue, I start breathing again.

12-15-2006, 11:20 AM	#4 (permalink)
Dan Millheim Pianissimo User Join Date: Sep 2004 Location: Fort Worth ,TX Posts: 236	Re: Valve Venting They tend to deal better with internal conflict and anger issues then "un vented" valves, ha. Sorry, it's my day off and I have nothing better to do with my time. __________________ Eclipse Custom XLR (Beyond beautiful 24k scratch) gold (05 Eclipse Contest Horn) Getzen Genesis (Beautiful 24k scratch gold) Wiseman Double Case (10% discount code: T624) Monette/Harrelson B1-1 prana custom one off. Horns/MPC Cryo'ed at Cryo-parts.com

06-30-2008, 10:14 AM	#5 (permalink)
Trumpet Dad Pianissimo User Join Date: Jun 2008 Location: New Jersey, USA Posts: 87	Re: Valve Venting Does anyone else have any thoughts on this topic? I'm debating whether to get the valves vented on the new Stradivarius I'm planning to win from Dillon's. I bought my son a 2'nd hand Kanstul last year. The previous owner had the vales vented along with a precision valve alignment (good purchase for $1,000). The trumpet sounds great and my son likes the benefit of not having to depress the 3'rd valve to move the slide. But what are the negatives? Surely there must be some sort of trade-off otherwise the manufacturers would be offering this as standard equipment--right? The Kanstul has stops on the 1'st and 3'rd slides so we don't have to worry about the slides falling out. I don't know about the Strad. __________________ Equipment Kanstul ZKT1502 Greg Black "BP" mouthpiece Ultra-Pure valve oil

06-30-2008, 11:13 AM	#6 (permalink)
MJ Forte User Join Date: Jan 2006 Location: Naptown Posts: 1,830	Re: Valve Venting I have the third valve on my Bb vented. Makes some things a lot easier. Makes plunger / quick mute changes a pain in the ass sometimes. __________________

11-14-2006, 07:22 PM	#2 (permalink)
gchun Pianissimo User Join Date: Dec 2003 Posts: 123	Advantage: You can move your slides without pressing down the valves to release the compression. Disadvantage: Your slides can fall off your horn without pressing down the valves as there is no compression in the "open horn" (no valves down) state. Garry

07-02-2008, 12:20 AM	#7 (permalink)
Trumpet guy Mezzo Forte User Join Date: Feb 2008 Location: California Posts: 862	Re: Valve Venting strad has 3rd slide stops what exactly is venting? what do they do to de-pressurize the valve chambers? __________________ Equipment Bach Stradivarius 180S37 - Bach 3C Bach TR300 - Bach 3C Berkeley Cornet Berkeley Picc - Bach 10 1/2 E Jupiter JST314 - 3C/B Megatone

07-02-2008, 03:30 AM	#8 (permalink)
Puukka Pianissimo User Join Date: Jan 2005 Location: Vienna/Austria Posts: 56	Re: Valve Venting Some B&S (MBX, DBX,...) have the venting (small hole at the valves) at the first and third slide. I didn´t like it at all, the first one was gone every moment. It got loose in the Gig Bag and I had to take it veeery carefully out of the bag. If the stopping mechanism of the third one is a screw, the third one also can fly away easily, if the screw wasn´t tightend before. Herbert __________________ Hammond Design 6Mv Burbank 5X Kanstul CHI-1070

07-02-2008, 12:50 PM	#10 (permalink)
Trumpet guy Mezzo Forte User Join Date: Feb 2008 Location: California Posts: 862	Re: Valve Venting A HOLE? That sounds like it doesn't look good. __________________ Equipment Bach Stradivarius 180S37 - Bach 3C Bach TR300 - Bach 3C Berkeley Cornet Berkeley Picc - Bach 10 1/2 E Jupiter JST314 - 3C/B Megatone

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