I bought some new ‘brass’ quick connect hose fitting a few years ago. They started to leak. When I put in a new rubber washer in, it leaked worse. I took it apart and discovered the threads had corroded and were ripping the washer apart as I tightened it. This is not brass as I had thought. It is aluminum or some lightweight metal and gold / brass colored. It reacts with real brass.
I ran into this exact same situation trying to remove the same style of quick disconnect fitting from a hose that a friend was getting rid of. When I finally removed the (formerly anodized) aluminum coupling that was stuck in the hose I discovered what I took to be galvanic corrosion on the aluminum male side component. I was really surprised to discover this. I know that I certainly won’t be investing in anything like this myself.
Its a big problem with modern hose couplers. I have some I can’t break apart with wrenches.
I started to apply teflon pipe dope lightly to them to see if it helps. I was taught that pipe dope not only helps stops leaks, but is also so you can take the fitting apart later.
