The 1.660 TEE ST RDCR F X 1-1/4M ASTM F1948 CAT 1 from Dresser Industries is a high-quality tee fitting designed for efficient fluid distribution. This fitting features a female connection on one side and a 1-1/4 inch male connection on the other, allowing for versatile installation options. Constructed to meet ASTM F1948 standards, it ensures durability and reliability under pressure. Ideal for various applications, this tee fitting is compatible with standard piping systems, making it a valuable addition to any plumbing or HVAC project.