Control handpiece block service kit compatible with the A-dec Century II, Cascade, Decade, Excellence, and Mini-Troll delivery units.
Product Details:
- Kit Includes: 2 gaskets, 1 helical compression spring, 1 relay valve stem (new style), 2 diaphragms, 2 button head screws, and 2 o-rings.
- OEM #90-0321-00
Manufacturer Installation Instructions (link)
Built as a direct replacement for the A-dec Century II, the Control Block Service Kit (A-dec Style) from Rpi fits without modification or guesswork. For offices that track repair parts spend by vendor, Rpi products tend to deliver lower total cost of ownership when factoring in consistency and fewer returns.
What Buyers Are Saying
“Parts must meet your 100% complete satisfaction. No arbitrary time limits on the warranty.”
— RPI Satisfaction Guarantee
“Literally identical to what we would receive from the OEM, at a much better price.”
— Dental Equipment Technician