Henson and Company, Inc. has released the Henson Automatic Ball Valve Lock, an innovative device that can be retrofitted to any ball valve to prevent accidental opening. The lock, which is made of cast aluminum and stainless steel hardware, quickly and easily attaches to any standard ball valve lock. It engages automatically when the valve handle is placed in the closed position and releases with a simple, deliberate flick of the thumb. www.hensonandcompany.com. Henson and Company, Inc.