Delta Faucet RP19804 1300/1400 Series Catridge Assembly Looking for an easy way to replace your old, worn out shower faucet? The Delta Faucet RP19804 1300/1400 Series Catridge Assembly is a genuine Delta repair part that is easy to install and manufactured with quality construction. It is pressure balanced for consistent water temperature and comes with a lifetime limited warranty that covers parts and finish defects.