Shark bite connectors but rather expensive and one should use their tool to camphor the pipe end before inserting the pipe into the fitting. Also, as mentioned you will need a removal to remove the connector.
Another good connector is called flair -It and offers a good connector product line at reasonable prices. These connectors require no special tools to install or remove. you can find these connectors at most RV parts departments.
There are other systems but are usually used in high production work
2009 Tiffin 43QBP Allegro Bus
RoadMaster Sterling Tow Bar
US Gear UTB
Ford Explorer Sport Toad
WA7MXP
"Pisqually" the attack kitty :B