There is a stop fitting inside the handle or on the cartridge under the handle, depending on whether it is a simple antiscald valve, a pressure balanced antiscald with one handle, or an antiscald with two handles, (a small one for the temperature and a large lever for the volume.
Gary, go to our web site and go to the single lever parts breakdown pages I list all the delta anti scald valves there. You can call or email me with what model you have and I can tell you how to adjust the faucet.