RP19804

The RP19804 is a Delta pressure-balance valve cartridge, designed to control water temperature in Monitor 1300 and 1400 series tub and shower faucets. It is the part that mixes the hot and cold supplies and sets the water temperature at the showerhead, so replacing a worn cartridge is one of the most common ways to fix a leaking, dripping, or hard-to-control shower valve. Delta supplies this cartridge with its pressure-balance tub and shower faucets, making the RP19804 a genuine, direct replacement. The RP19804 is a single-function cartridge that monitors water pressure to balance the hot and cold supplies, helping keep the temperature steady if water is used elsewhere in the home, such as when a toilet is flushed or a dishwasher runs. Delta designs its tub and shower faucets to keep water temperature within about 3.6 degrees Fahrenheit (1.7 degrees Celsius). The cartridge includes an adjustable handle limit stop, which can be set so the handle cannot be turned to a temperature that is too hot, and easily replaced seals make future maintenance simple. Mechanically, the RP19804 is a plastic cartridge assembly about 8-1/8 inches long, and it can be replaced without going behind the wall, which saves time and avoids opening up the shower surround. It is intended for Monitor 1300 and 1400 series valves, and Delta notes that this version fits 1400 series valves installed before 2006 and will not work with its 600 series push-up shower units. Because several cartridge types exist, it is worth confirming your valve series and installation date before ordering. This makes the RP19804 a practical choice for plumbers, property managers, and homeowners repairing Delta tub and shower valves. Purchase the RP19804 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted plumbing parts, repair components, and electrical products from manufacturers like Delta Faucet, Siemens, Eaton, and Schneider Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.