Ordered the new supply valve since the brass fitting is an integral part of it. It is very difficult to access the valve without pulling the dishwasher out and elevating the front. The front cover needs to be removed, and then the screws holding the actual unit must be removed. there is another plate above that must be removed from the side that you are working on, and then the supply valve can be slid upward and out to remove the unit. Disconnect the electrical connection and the hose (mine had a 'pinch' type hose clamp), making sure you keep the hose stretched out where you can reconnect it to the new unit (I used a vise grip pliers behind the hose clamp to keep mine out). Reverse the order to re-install...