ASC Anvil 3/4"x1/2" Black Reducing 90-Degree Elbow. Made from durable malleable iron with a black finish, this elbow ensures reliable performance in gas, water, and oil applications. It conforms to ASME B16.3 and B16.39 standards, undergoing 100% gas testing at a minimum of 100 PSI (6.9 bar) for elbows and tees 3/8 inch (10 DN) and larger.