Mueller® Curb Stop Tees are used to make main to service connections and also offer a means to control service line flow at the main. Mueller Curb Stop Tees can be used with curb boxes to provide a means to access the buried tee from above ground and also have a large operating head that is drilled to accept the attachment of a shut-off rod. These curb stop tees have accurately machined forged steel bodies and completion caps, one piece stainless steel stem, ductile iron operating nut, and O-ring sealed stem and completion cap.