We need to use the kitchen sink sprayer in the half bath. Is it possible to use a longer hose - or to even purchase a longer hose for it to work at that distance from the sink? It works perfectly where it is with plenty of pressure, etc.

Why not get an adapter for the sink?

I guess what are you going to do with it in a half bath ? You already have a sink with water in the bath room as noted, either plumb and install a sprayer there, or get one that adapts to the sink.

Yeah, like these guys suggested, you should be able to adapt a spray hose over at the bathroom sink faucet.

Here, for example, you'd start with an aerator x 1/2" IPS male adapter (see image) and then adapt from the 1/2" down to a hose spray.

You could also purchase an aerator x hose adapter (see other image) and hook up a real hose and a hose spray head.

Finally, if you really want to extend that kitchen spray hose it can be done if it is an older faucet... newer faucets have specialized ends. Let me know if this is needed and I'll provide a list of material, OK?

These materials will probably only be found online or at a local plumbing supply store so start there.

Good luck!

Mark