Wichita Clutch has developed a new dual action head assembly for their line of AquaMaKKs water cooled brakes that provides both failsafe parking and precision tension braking capability in one unitized assembly. AquaMaKKs water-cooled brakes are optimized to provide accurate torque control for constant tensioning in heavy-duty continuous slip tension applications such as drawworks and other hoisting systems. Copper wear plates are utilized for suitable heat absorption. Unique patent pending water jacket design ensures high heat absorption and torque stability, allowing for greater heat absorption over similar sized competitive units. Spring-set feature can be used to assist primary braking systems in parking and E-stop events by providing additional torque from this dynamic brake during a controlled system failure and adds an additional level of braking redundancy for maximum safety. Dual action head assembly can be retrofit onto existing pneumatically-controlled 25 and 36 size AquaMaKKs units. Spring-set and tensioning functions can be either pneumatically or hydraulically operated with fewer parts for simple installation and maintenance, and a shim design that makes it easy to maintain. Adjustment for wear is easily accomplished by removing shims without any unit disassembly. AquaMaKKs can be utilized for field retrofits, rebuilds or new OEM applications.