Thank you for your question, Doug! This model does not have a water restricting device and please know any modifications made to the faucet will void the warranty. Instead, we recommend timing how long it takes to fill 1.80 gpm to see if you are getting the correct flow rate. If not, try removing the wand from the hose to check for debris. This model is a water-efficient product that is only capable of producing 1.80 gpm @ 60 psi. If you would like to troubleshoot this issue further, please contact us at 1-800-345-3358 Monday-Friday: 8a.m.-8p.m. EST and Saturday: 9a.m.-6p.m. EST or via email at customerservice@deltafaucet.com. Best regards, Edward

Hi, DKim! Thank you for your question. We do not recommend to install water filtration systems on the end of the faucet as potential pressure fluctuations during water filter operation may result in the hose rupturing. Best Regards, Rosanna

Hello Cathy, Thank you for your question. We do not recommend disassembling the sprayer/wand assembly and the aerator is non-removable on the Delta Dominic Pull-Down Touch2O Kitchen 19940T-SPSD-DST faucet. To dissolve any sediment that may collect in the aerator or spray face, just soak the face of the spray assembly in a 50/50 or stronger mixture of white vinegar and tap water for 10 to 15 minutes. The large particles of debris are caught in the bottom end of the spray assembly, where it connects to the hose. Just unscrew the spray assembly from the hose assembly and flush the debris out with water from the hose. Best regards, Tanya

Hi, Roger! Thank you for your question, and  I am sorry to hear you are having an issue with your Touch2O faucet. There are a couple of things that can cause the issue you are experiencing. The installation of electronic faucets must be precise to prevent interference in the signal or false activation. Over time things can be knocked around below the sink from the faucet being swiveled and hose being pulled out. If the signal is weak or wires come in to contact with one another or other components it interferes with the signal.  Below are items to check for.  Must Do or significant degradation in touch responsiveness is likely: • Use the stabilization plate provided with the faucet (it is an insulator, which helps the faucet recognize the signal better) • Use all other insulators provided with the faucet (exception: spout insulator cannot be used with thin-mounting surfaces) • Make sure the metal mounting shank is at least ½" from the sink bowl or other metal objects (e.g., sink clips, metallic hoses, house wiring, etc.) • Separate the black wire with the stereo plug as much as possible from the other wires.   Should Do or some degradation in touch responsiveness is possible: • Place battery pack as close to the floor of cabinet as possible (flat on cabinet floor for best results) • Maintain a 2" clearance around battery pack (excluding cabinet itself) • Route faucet wires away from all hoses and supply lines to prevent contact. • Avoid placing household objects (sponges, soaps, decorations, etc.) within 2" of faucet.   Must NOT Do or significant degradation in touch responsiveness is likely: • Modify the supplied parts (exception is stabilizer plate—it may be cut for non-standard hole spacing) • Use power adaptor in lieu of supplied battery pack. • Bundle wires together.   Should NOT Do or some degradation in touch responsiveness is possible: • **Connect faucet or battery pack to an earth ground (e.g., house wiring or water lines) • Install faucet on metal counter top (metal sinks are fine) • Install faucet within 4" of a metal back splash behind faucet. If you should need more assistance with this issue, please contact our Delta Customer Service line at (800)345-3358. We are available Monday-Friday, 7am-7pm, CST and Saturday, 8am-5pm, CST. You may also email at customerservice@deltafaucet.com. Best Regards, Rosanna

Hi, holdena! Thank you for your question. We have not had any recalls on our Delta 19940T-SPSD-DST. If you should need any assistance, please contact our Delta Customer Service line at (800)345-3358. We are available Monday-Friday, 7am-7pm, CST and Saturday, 8am-5pm, CST. You may also email at customerservice@deltafaucet.com. Best Regards, Rosanna

Hi, Chcicofly! Thank you for your question. The ethernet port on the solenoid assembly should be disregarded. It is technical testing at our factory. Best Regards, Rosanna

Hi, Chris777! Thank you for your question. Our Diamond Seal Technology faucets are made to be at 120 degrees or less. Hotter than 120 degrees may result in damaging internal parts in our Delta faucets. Best Regards, Rosanna

Yes, the handle must be in the open position for the water to come on when you touch the faucet. I recommend at night and when you are not home closing the handle, as the electronics are persnickity under the sink, and it can have a tendency to turn on by itself.