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Frequently bought together:


Since their introduction in 1989, CCAPS have proven to be the best looking, best performing heavy valve cap on the market. At 1 oz. each, CCAPS have enough mass to improve the response of any trumpet.

How do they work?

By adding mass to the entry and exit points on the valve section of your horn, the trumpet's optimal resistance can be obtained. The weight of the CCAPS in the proper position on the valve section can provide a denser, more centered sound, along with a more stable harmonic series. Overall response and attacks are more even throughout the range of the horn as well. Used alone or in conjunction with the supplied shims and O-rings you can find the best combination for you.

CCAPS are available for these instruments:

CCAPS Size Inner Diameter Fits these horns   & Thread Pitch   #1 .725" 36 TPI Yamaha (American models), King, Benge 90 series, Stomvi and V Raptor #2 .710" 32 TPI Bach Stradivarius #3 .710" 36 TPI Schilke, Benge, Most Kanstul produced trumpets #4 .735" 36 TPI Getzen, Holton Sandoval T257 #5 .725" 32 TPI Blackburn, Most Calicchios #6 .710" 40 TPI Blessing, Holton ST 307 #7 .781" 40 TPI Conn Connstellation (most) #8 .750" 36 TPI Jupiter, Olds (most), and others YFL .781" 36 TPI Yamaha flugels 631, 73 CFL .757" 32 TPI Couesnon flugels B&S .711" .75mm B&S Challeger Trpt, Flugel. Scodwell (CarolBrass) J .725" .5mm Yamaha (Japanese), 6310Z Flugel K O.D. .695" Selmer "K" (K Radial can use only 2 CCAPS) CG O.D. .706" 36 TPI Claude Gordon Selmer only T .715" 36 TPI Bach TR 300 X .710" 32 TPI Bach Stradivarious ONLY! X-Y .725" 36 TPI Most Yamaha trumpets


Mounting Methods

  1. Stretch the o-rings over the valve casing threads and screw CCAPS on. The amount of tension can be varied on each valve. This is the darkest sounding method. Shims are not used in this method.
  2. Insert the o-ring into the CCAP and the lay the brass shim on top. This has the effect of "grounding out" the bottom of each valve and the effects are slightly different. Resulting sound is less dark than method #1.
  3. Screw the CCAPS on as you would any other valve cap. This method retains some of the brightness of your horn and provides some slot-lock.
  4. Screw #1 and #2 on normally (no 0-rings or shims). Drop 2 shims in #3 and screw CCAP on. This is slightly brighter than #3.
  5. Any combination of #1, #2, #3, or #4. No two horns or players are alike. You will have to experiment to see which method is best for your needs.
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1 Review

  • 5
    Curry Heavy Bottom Caps - No. 3 - for Schilke

    Posted by JaegerTiger on 22nd Apr 2021

    Adding mass via heavier bottom caps does truly work -- as do these. The results I've experienced are better than I expected. I now have improved response while obtaining better projection as well as control. I have experienced the same good results from Bach Heavy Bottom Valve Caps.

    OF NOTE: There are several components in your kit. Besides the valve caps themselves, there are also washers (to add even more mass if you want) as well as O-rings that will secure the added washers in place. Because I am concerned about some "dampening" attributes from the O-rings, I have NOT installed mine, But I have placed the washers inside each bottom cap and am careful whenever I take the caps off.

    I highly recommend getting these caps. After you install them, get ready for a whole new experience / improved with your horn -- well worth the money spent.

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