Delta 1600T6102RI-48IP Commercial Chrome E-Concealed Hardwire Flush Valve. Delta's Line of Commercial Products are an industry leader in the Bathroom Faucets, Shower Fixtures and Bathroom Accessories. The large line of Commercial Grade products are designed to withstand the every day wear and tear, and last for years to come. These products are ideal for hospitals, schools, and other high traffic applications. This Delta 1600T6102RI-48IP Commercial Chrome E-Concealed Hardwire Flush Valve mounts within the wall, and detects movement. This Flush Valve also includes an automatic sensor with a manual push-button override, a high back pressure vacuum breaker, and chemical resistant gaskets and seals for extended service life with lower maintenance costs.