Delta DORVAL Single Handle Bathroom Faucet - 557Delta DORVAL Single Handle Bathroom Faucet 557 The Dorval Bathroom Collection diverges from conventional expectations with regal accents and a powerful design that commands your attention. Delta faucets with DIAMOND Seal Technology perform like new for life with a patented design that reduces leak points, is less hassle to install and lasts twice as long as the industry standard. Delta WaterSense labeled faucets use at least 20% less water than the