Does delta faucets have an anti scald and would they allow cold water into the hot side with the hot water turned off ? While I was working on my dishwasher I needed to stop the hot water so, turned off the new ball valve at the hot water heater. Opened the kitchen faucet hot side to drain the pressure. Mostly stopped but had a constant trickle. I had to shut the cold side off in order to stop it. Do I need a new cartridge or is this a feature of some type ?