This BrassCraft IPS x IPS Tankless Water Heater Service Valves Kit connects most tankless water heaters to your water supply. The kit includes a hot and cold water valve with 3/4 in. iron pipe connections to the tankless water heater and to the water distribution system. Our compact, slim-fit valve design is a perfect fit for a variety of installations - recessed or cover boxes. Plus, BrassCraft tankless service valves feature a captive nut and washer on the appliance connection to eliminate the potential for component loss during installation. Additionally, the captive washer won't kink or misalign during installation. And the integrated drain valve allows instant water flow control and hassle-free maintenance of your tankless appliance.