We have a Pegasus 'Arko' pullout sprayer faucet. The pullout sprayer no longer will stay in and just dangles. Seems we have lost so sort of washer that kept the faucet in place. Any suggestions to find a replacement? I have tried random washers to no avail.

This type of faucet uses a weighted block to pull the sprayer back. You either have the spray line tangled and caught the weight or somehow the weight has come off. Look under the sink for an egg shaper weight. Some click and lock on, some are affixed with screws.

Now that I have reread your post I'm a bit confused. Is the sprayer hanging or the faucet?

Brian said, "This type of faucet uses a weighted block to pull the sprayer back", and I completely agree. Look under the sink, it may be that the weight dropped off under the sink... reattach and it should help to pull the spray handle back into the faucet!

Good luck!

Mark