Is there a coupler (compression w/rubber gaskets) that I can use to connect PVC to Galvanized Water Pipe?

There sure is. I can't remember the particular name of the unit at the moment, but the ones they sell in my area are a hard white plastic, with threaded nuts at each end, and tapered rubber washers that compress down onto the pipe that you insert when you twist the nuts down tight. You should be able to buy either the same size both ends or a combo of say, 1/2" galv. to 3/4" PVC or reverse. They're not terribly expensive and work quite well. If you're connecting drain lines, then the Fernco fittings, which are all rubber with stainless hose clamps on each end, work real well. They also make it easy to take apart if need be in the future.

We do that all the time on the property I maintain. Often times the galvanzied threads are 'gone' and it's a mess when you disconnect the PVC. So, we use a fernco! See the link and talk to someone at a plumbing supply store.

I'm going to guess that your galvanized is 2" and you're trying to go to 1 1/2 pvc? maybe to 1 1/4 in the bathrooms? Fernco has the part!

There may be a coupler like that,try a plumbing store shop,large hardware. I have used a similar item, BUT,we had to have athreaded end on the galvanized.

Honestly, I don't know for sure, but I think something like that does exist. However, I would definitly spring for the plumber on this one especially if the piping is under ground. A compression fitting is likely to leak in a much shorter period of time, and you will wind up with a much bigger problem than you have now.

Go to Lowes or HomeDepot and they will have the compression fittings you need. If by chance they are out..go to a local plumbing supply store in your area and they will fix ya right up.

you can go to a rental store and rent a pipe threader,with it being a supply line from the source you want the best possible connection.(don't want any floods)

compression coupler