GatorLock Couplings from Green Leaf allow for the quick connect and disconnect of tanks, pumps, transfer lines and more. The locking mechanism reduces the possibility of unintentionally opening the cam levers, which could result in personal injury and spills. Polypropylene couplings are highly resistant to chemical solvents and environmental stress. The line includes 1/2- through 3-inch locking cams, as well as 1/2- through 4-inch nonlocking in Series A-F. The maximum operating pressures are 90 to 125 psi at 70 degrees F. 800/654-9808; www.green-leaf.us/.