Hi there, this is the water shut-off valve inside my garage to shut off the supply to the outdoor hose spigot. I found traces of water slowly seeping out near the green handle (exact location is marked by the red arrow in the attached picture). There looks like “-ABP->” stamped on the valve body next to a protruding knob. Do you happen to know what kind of valve this is? Is it relatively straightforward to fix, such as, open it & replace an o-ring (a generic o-ring which I can find at the local hardware store)? Thanks for your help!