Kitchen faucet wont connect to 3/8 flow control valve!?

Unfortunately there is multiple fitting types that "look" to be the same size.

The best suggestion I can make is to take your sprayer fitting to your local hardware store. Use that to find the correct male to fit. With luck you can then simply read labels to get stuff to match up. Worst case you're going to have to take both the flow control and the sprayer to the hardware store to find what adapter if any you need.

Sounds like your water has tons of forged stuff in it. Maybe from town, probably out of your pipes. Take the aerator off the top of the tap and investigate to peer whether it is clogged with stuff. Be cautious to notice the order of the portions that pop out of the aerator--you'll have got to placed them again. Try walking tap with out an aerator. If it runs loose then the stuff is your situation and is more commonly additionally the situation with the close off. Pieces of rust or some thing at the tap washing machine will permit water to preserve to run.

Hardware store carries multiple configurations including adaptors. Take any information or piece that can confirm the sizes with you.

Good luck

you need to use new supply lines to connect.

have it checked with a professional.