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JackD · 03-07-2005, 07:38 PM

Ok, this may sound very stupid, but what exactly do valve caps do? Why not just seal off the bottom of the valve casing? What's that hole for? I know trumpets play without caps on at all, so what exactly are they for?

03-07-2005, 07:38 PM	#1 (permalink)
JackD Mezzo Forte User Join Date: Nov 2003 Location: Manchester / London Posts: 763	Valve caps? Ok, this may sound very stupid, but what exactly do valve caps do? Why not just seal off the bottom of the valve casing? What's that hole for? I know trumpets play without caps on at all, so what exactly are they for?