| Model numbers | Type | Repair part | Handle |
|---|---|---|---|
| B4410LF, B4410LF-SS (kitchen with side spray); B1310LF, B3310LF, 10900LF, 10901LF share the same valve | Kitchen, single handle, ball type | RP77763 repair kit (ball, seats, springs, cam, cap, adjusting ring, bonnet) | Single lever |
The Foundations line is Delta’s builder-grade faucet and one of the last Delta kitchen faucets still built on the ball valve. The generic RP3614 kit fits, but Delta sells a model specific RP77763 kit that also includes the ball, cap, and adjusting ring, which is the better buy if the faucet is more than a few years old.
Before you start. Shut off the two small valves under the sink by turning them clockwise, then open the faucet to confirm the water has stopped. Plug the drain so small parts cannot fall in. You will need a screwdriver, an adjustable wrench or pliers, and for most handles a hex key (an Allen wrench, sold as an inexpensive set at any hardware store). If a shutoff valve will not turn or starts to drip, or anything is corroded and will not loosen with moderate force, stop and see when to call a plumber. New to this? Start here explains the parts and tools in plain language.
Not sure this is your faucet? See how to identify your Delta cartridge without a model number, or how to find your brand and model.
Taking it apart
- Pop the red and blue button off the handle.
- Loosen the 1/8 inch hex set screw and lift the handle.
- Unscrew the adjusting ring, then the cap (wrap it in a rag).
- Lift out the cam and packing, then the ball. Hook the seats and springs out of the ports.
Repairs for this faucet
- Drip from the spout: rebuild with RP3614, or the model specific RP77763 kit which includes the ball
- Leak at the base of the spout: spout O-rings and diverter (RP44124)
- Side spray weak: clean or replace the diverter
- Hot and cold reversed: swap the supply lines
- Low pressure: aerator or wand screen
Parts
- RP77763 at DeltaFaucet.com
- RP4993 seats and springs at DeltaFaucet.com
- Delta RP3614 repair kit on Amazon
Delta pageIdentify your cartridgeStart hereWhen to call a plumber
Faucet Answers is reader supported. Some links to retailers and manufacturers are affiliate links, and purchases made through them may earn a small commission at no extra cost to you. See the affiliate disclosure.