I Brass Music Instrument Care Guide & Usage Tips Rotary valve For top performance, it is suggested to apply oils weekly and add oil to the leadpipe daily before playing. Piston valve For top performance, it is suggested to apply oils weekly and add oil to the leadpipe daily before playing. Wind Instruments Copyright Ⓒ 2024, All Rights Reserved by I Brass Music OÜ, Tallinn, Estonia Follow Us Youtube Facebook-f Instagram