Camco 3/4" MPTx3/4" MHTx2-1/2" Water Heater Drain Valve. Constructed from high-quality plastic, this drain valve is designed for permanent installation directly into the water heater, providing easy and convenient draining. With its 3/4" male pipe thread (MPT) on one end and 3/4" male hose thread (MHT) on the other, it ensures a secure connection to both the water heater and your garden hose. Measuring 2-1/2" in length, this drain valve allows for efficient draining of water from your water heater, making maintenance tasks a breeze.