ASC Anvil 3/4"x1/2"x3/4" Black Reducing Tee. It is made of durable malleable iron with a black finish for corrosion resistance. This reducing tee allows you to connect pipes of different sizes, making it a versatile fitting for gas, water, and oil applications. Manufactured and tested to meet Anvil's strict quality standards, it conforms to ASME B16.3 and B16.39. All elbows and tees 3/8 inch (10 DN) and larger are 100 percent gas tested at a minimum of 100 PSI (6.9 bar).