In your description for faucet 2256-RB-DST valve stem RP60400 is wrong. I have the same exact faucet as described but the part # for the valve assembly should be RP25513. I just received 2 of the wrong parts according to your diagram. RP60400 does not work on my 2256-RB-DST.
I'm sorry for any inconvenience. Based on your description you have the pre-DST version of the Victorian Two Handle Widespread Kitchen Faucet, model number 2256-RBLHP, which uses the RP25513 stem unit and RP4993 seats and springs.
Date published: 2016-11-29