Schaffhausen, Switzerland-based Tyco International Ltd. has agreed to spin off its Tyco Flow division to Minneapolis-based Pentair for $4.53 billion, Bloomberg reports. Tyco, which creates valves and other flow-control instruments, said shareholders will own 52.5 percent of the combined company with Pentair investors owning the remainder. The deal would create a $7.7 billion business in combined sales and save Tyco a potential $250 million annually. more