A.Y. McDonald Repair Ball Curb Stops supply additional lay length to allow them to make up the difference between a longer curb stop or longer space if a curb stop is cut out of an existing service line while maintaining a low turning torque and bubble-tight 300 psig water pressure rating due to the PTFE coated brass ball that is supported by two blow-out proof EPDM seals. The end piece joint is sealed with an EPDM O-ring and thread locker. McDonald® Ball Curb Stops offer positive shut-off from either direction and are available with a wide variety of end connections.