shut-off

Just came to a relative’s house in Florida and trying to shut off toilet water but no obvious valve, just what’s in the picture. I’m tempted to pull hard on it but it feels plastic and I’m afraid to break it. Any information on what this is and how to turn off? Thank you

Greetings -- I have a 1500 gallon underground cistern, which is fed by my shallow, low yield well (once an hour, water shoots over from well to the storage tank). I have a submerged pump in the storage tank that serves water to the two pressure tanks I have in the basement of the house. 60/40...

My son broke our bathroom faucet in our mobile home. I purchased a regular style fixture ( and galvanized pipe fittings to make connections between the new fixture and the ½ inch clear PEX-A Tuffpex by Uponor. Seemed to go OK , but when I turned on water , water is now shooting out from...

The old refrigerator was removed and a new refrigerator was installed. The issue is: The shut-off valve was turned back to the "on" (open) position once installing the new hose to new refrigerator but no water is coming from the pipe. Does anyone happen to have any recommendations?