Found part #A507190 tab had fallen off, need replacement part to fix or do you want me to send the whole unit back. I have three of these in my house and this is the first one to fail. The tab secures the unit in the brass housing and prevents unit from turning inside housing.

You need to talk to the manufacturer. If you have the schematic for the part, you should have the Tel# of the manufacturer. We have no idea as to who the manufacturer is. We are a help desk and sell or stock nothing.

Please tell us the brand and the model number of your faucet, Thanks.

John