Review on 🔧 C&D CD3813 Brass Valve Core Tool by C and D Valve Co by Dwayne Quarles

There were valve core leaks in the central air conditioning and the system was already dead. I used this tool to replace all three on my system. It has three teflon sealed valve cores that worked great. After removing the old one and installing the new one, I took a deep vacuum and recharged it and found no leaks. Great valves, great tool!