Nuk purchased the Gerber company recently and as a result they now carry many of the Gerber products. The valves are Gerber Graduates Replacement valves and they come 2 in a package. They are BPA free and fit all of the Gerber Spill Proof Sippy cups which are also sold from the same site. A discount coupon code is available for all of the products once you visit the site.
The valves are "flow controlled" and are activated by your child taking a sip from the cup. Always make sure you wash these before using. Hot water and mild detergent work well. They are also dishwasher safe but be sure to put them on the TOP RACK ONLY. Make sure they are completely dry before putting them away. Do not use a nipple brush or harsh surface to clean the valves. If you are having trouble getting sticky drinks off of the valve, simply soak them in hot water and a mild detergent before putting in the dishwasher. This should only be a problem if you have allowed the sippy cup to sit for a long time so that the sticky substances have time to harden on the valve.
Here are a few pictures of the Nuk/Gerber Graduates Replacement Valves.
These are the valves OUT of the package and how they look on each side.
This is the way the Nuk replacement valves look in the packages. Package styles do change but the contents are the same so make sure you look at the actual contents when considering a purchase.
.jpg)
