Review on Zurn Pex QC33T Coupling Adapter by Andrew Frison

I ordered two Zurn Pex QC33T couplers which should go through like the first picture. I received two Zurn Pex Q2500 check valves in a package labeled QC33T which looks like the second picture. While the check valves make the same connection and the mount works, the check valves prevent me from draining the lines in the winter, which is a must for an RV. I really need QC33T couplers for the light I'm installing.